Rocd and questioning intelligence of partner

I continue to get distressing thoughts surrounding my love for my boyfriend and if we are going to work out and are meant to be together because he is of different religious beliefs, and I grew up hearing that doesn’t work in relationships. We have been together nearly two years. I know I love him, and he supports my beliefs and I support him, we have had conversations about it. but my brain goes through intense periods of hyper focusing on the anxiety surrounding it, making me feel like I am going to hurt him, or we are going to break up because of me and our differences. It’s very distressing and I ruminate a lot about him and try to calm myself down by thinking through the situation, a mental compulsion? I know worrying about your partner is normal but I feel like I hyper fixate on the compatability between us and me hurting him and I don’t know if it’s ROCD or if it means we aren’t compatible. It’s upsetting.

I believe I (currently) am experiencing ROCD. Growing up as a child, I was always double checking the door was locked, wouldn’t walk on cracks, had to count to step. I eventually grew out of it. But I feel it has grown into ROCD. I currently have a year long relationship with a person I love and has treated me very well. I have plans to move in with him and I went job seeking at his house (we are long distance) last weekend. I had anxiety the entire time. I kept telling myself, I’m scared, what if this doesn’t work, what if this is telling me to break free of the relationship, what if I’m not attracted to him, and I was avoidant because I was so scared to feel the anxiety around/with him and question it all again. Once the anxiety would settle I would cry to him about it and tell him I’m just scared and everything is caving in. But is this normal in ROCD? I found myself googling everything the weeks leading up to me going. I once told him to give me space (he is very affectionate and I am not) and very selfless when it comes to calls/texts. PLUS - long distance adds to that. With everything, I started googling it all nonstop for days and feared we aren’t meant for each other. Now when he calls I feel anxious because I don’t want to feel that “trapped” feeling of not having space again and I googled how to find common and reasonable communication with long distance. UGH just everything is scaring me and I fear my obsessiveness over it is making it worse.

Please forgive me in advance. I do not want to offend anyone on this platform so if I'm not politically correct, I am sorry. My bf of almost 2 years comes from a lower economic status than I did growing up. His father has intellectual disabilities from childhood trauma and abuse. His nieces and nephews have some disabilities as well. My bf and I have talked about marriage in the future. My OCD makes me focus on the possibility that if we marry, we may have a child with disabilities because of it running in the family. I know I sound judgemental and that does bother me. I know I'm not perfect so I shouldn't seek perfection in others or judge ppl but it worries me. I look for things wrong in my bf too, worrying that maybe I missed something and maybe he has something I didn't notice. It sounds ridiculous as I write this. Am I alone in this issue?