Anxiety and pregnancy advice

Does anyone have any advice on ways to alleviate anxiety regarding potential pregnancy? I definitely do not want to be pregnant. And I’m super informed about pregnancy and that never helped. I’m also very careful and use the nuvaring and a condom every time. But for example I’m on cycle day 15 and had sex two weeks ago and like 5 days ago and used a condom both times but my boobs are sore so I can’t help but freak out that I’m pregnant. I have OCD and with it comes some hypochondriasis and intrusive thoughts that I’m pregnant so it’s hard to change that. I’m also a little scared to start using pregnancy tests as a relief because half the tests I see pictures of on here looking completely negative to me but everyone else says positive so I think it would just stress me out!! Any advice is appreciated aside from just stopping sex because I’d really rather not do that. Thanks 🙃