I need help

I am 16 and struggling with OCD. It is causing me to do irrational things that I wouldn't normally do and cause issues with my parents. I feel like a terrible person and want to take back things that have happen and don't know how to make it better. The OCD causes things to get stuck in my brain and my questions have to be answered and talked about. I don't know how to let thoughts go and ways that would be healthy for myself and my parent when this happens. Any advice?

English is my second language,so please bear with me if there are any shortcomings. My OCD is manifested in the need to go to the bathroom before going to bed every time, but after each urination, I worry that I will have to go to the bathroom again because I feel that I seem haven't finished. This will affect my sleep by repeatedly entering and exiting the bathroom. It takes me more than half an hour to go to the bathroom before going to bed every time, and I have to fight with myself to tell myself that I have finished and don't have any more urine, so I can sleep peacefully. However, it takes countless times to comfort myself.I tried to quickly finish urinating and then immediately step out of the bathroom, but every time I had the thought of "I still feel like I have a little more urine, should I squat again?" I felt like I was nailed to the toilet and couldn't get out. (Our toilets here are squat toilets), which greatly shortened my daily sleep time. Moreover, after using the toilet, I would continue to use my phone to relieve anxiety and develop a habit of staying up late, which undoubtedly exacerbated my symptoms.It's like a process of constantly pursuing certainty, making sure that I have completely emptied my bladder, but this pursuit is morbid, and I can't accept its uncertainty.I don't know what to do. Do you have any solutions?

Having ocd is so incredibly exhausting and depressing- my mom and dad argued with me for over an hour talking about how im a pain to be around, go in too many loops, and ruin everything and everyones mood… this conversation started with me saying im stressed out because of school and that i dont want to go because im exhausted- and idk if this is like ocd directly but it takes me like 2 hours to get ready in the morning because i need to look PERFECT and the same everyday literally 😭 and that process feels so exhausting every morning at 6am but i will NOT go to school without going through with it- i will literally be crying and shaking and wanting to go home the minute i get to school if even a single strand of my hair is not perfectly straightened or any blemishes or flaws are showing- and i cant even walk to school or anything bc im scared the humidity will mess with my hair and everything- and it just really affects my life? And yeah its freaking exhausting. And i have two more years of highschool and I dont know if im going to make it 😭i get super stressed over grades too because i need them to be extraordinary otherwise its a fail. Nothing below 95%. And thats also tiring! 😁 and my mom told me today “medication IS NOTTTT AND OPTION!!!” Like oh okay so im just cooked 😭 and therapy isnt really helping me at all- i feel like what im being told is so basic and generic and it doesn’t help me when im in a huge ocd episode- which is often… and what i hate most is like my mom says “don’t come to me with your problems after 6pm…” im sorry i cant schedule my feelings 😭 im so tired