Engagement Purgatory w OCD

My boyfriend and I have been together for over six years. He said he’d propose by the end of this year, and it’s already November and there’s still no ring. I know there’s time left, but I’ve heard “soon” so many times that I feel embarrassed even bringing it up. I want it to feel right for him too, and he says he doesn’t feel pressured. I still hate feeling like I’m begging someone to marry me. He says he’s excited, and sometimes it feels like I’m the only one who’s frustrated that we’re still waiting. Then I start second guessing how much of that is my OCD and anxiety. I've been work in healthcare for 1.5 years, and he’s been working toward becoming a firefighter. He’s done volunteer firefighting, gone on EMT ride-alongs, gotten some certs, and worked in wildland firefighting for a bit before realizing it wasn’t for him. Getting his EMT certification is a big step toward getting hired by a city fire department here in California. Back in May, he told me it would take about two months. It’s November and he still doesn’t have it. He’s in tutoring now, and he says his tutor thinks he could take the exam in about two weeks. I can see he’s made progress, and I hope he gets there. I’m also tired of hearing “just a little longer.” When dates we’ve talked about come and go, it gets harder to trust the next timeline he gives me. I know he has a learning disorder and I have compassion for that but still. Between his career and getting engaged, it feels like it’s always wait, wait, wait. My sister and her husband have only been married about a year, and they moved back in with us because they couldn’t afford rent. They just told us they’re expecting their first baby, and my parents said they can stay here with the baby as long as they’re still actively looking for a place they can afford. I’m genuinely excited to be an aunt for the first time. I’m also already struggling to sleep and find time to decompress at home, so I’m stressed about what it’ll be like to have a baby in the house. I do understand where my boyfriend is coming from. We’ve always said that part of getting married, for us, is moving out of our parents’ homes and building a household of our own. He really wants us to have our own space and be able to afford to stay there. Seeing my sister and her husband struggle with rent and have to move back home makes me understand why he’s being careful. Neither of us wants to end up in that situation. I can see the logic in how he’s thinking about it, and I still get so frustrated because I just want to start our life together already. Honestly, part of me wants him to come rescue me. I could move out on my own, but rent would eat up a huge chunk of my paycheck, and I’m trying to pay down my student loans. Then I think about how much everything costs and suddenly I’m pissed at the economy, spiraling about Trump, and thinking everything is shit lol. What I really want is to come home to him and have a place that feels like ours. We’re trying to wait until marriage to move in together, and he feels more strongly about waiting than I do right now. Work takes so much out of me that some days even getting myself there feels like a lot. By the time I get home, I barely have the energy to keep up with the rest of my life. I think part of why I want him to rescue me is that I’m exhausted and want somewhere I can come home and breathe. On those days, it’s hard to tell how much of what I’m feeling is about the relationship and how much is everything else piling up. All my friends are married and have kids now. I’m happy for them, and I don’t want to compare, but hearing about their everyday lives reminds me how badly I want that too. And when someone asks, “So when are you guys getting engaged?” or reacts like, “Oh my God, six years?!” I feel embarrassed and replay it later. Do they think I’m stupid for waiting? Do they see something I’m missing? Then I start looking for reassurance. I ask him again if he’s still planning to propose this year, Google how long couples usually date before getting engaged, read threads about whether six years is a red flag, and keep watching proposal videos even though I know they can set me off. I’ll find a story about someone who waited longer and feel better for a minute. Then I see “if he wanted to, he would” in the comments and start searching all over again. We’ve talked over and over about money and where we are emotionally, mentally, and spiritually. On calmer days, I can understand why waiting might make sense. Even then, I still want to feel like we’re making a plan together. I love him and still want to marry him, and I’m scared I’ll keep waiting because leaving would hurt so much. I keep trying to figure out how much of this is relationship OCD and whether I’ve already been patient for a long time and need to consider leaving. I’ll imagine him proposing tomorrow and check whether I feel excited or resentful. Then I’ll imagine leaving and check whether I feel relieved or devastated. I can spend hours doing that, and afterward I’m just more exhausted. For anyone who’s dealt with relationship OCD while work and home already felt overwhelming, how did you know if it's your ocd or that you should leave?