weird discharge after period?! advice?

Kelsey
I am a worry wart and I feel like it's practically to the point that it is anxiety. I pay attention to my body and what it does to the point where I think everything happens is because I am pregnant, but I'm not and I never want to be. I stress for no reason like this for example. I am I BC and take the pill everyday at the same exact time. I have sex with a confom and check it after sex to make sure there is no hole, even then I think I am pregnant 😩 it's torture. I almost feel like I can't even enjoy a sex life. Now my period just ended Friday night/Saturday morning. Today, which is Sunday, I had some slight cramps and tonight before I took a shower there was light brown to slight yellow discharge. What is that?! I am worried and then my head goes crazy and think that my period was actually implantation bleeding and now I am having cramps... I don't know, I am just worried. I know that it was my period cause it lasted from wed to Friday night / Saturday morning and it was heavy. Help and any advice!