Period/ Discharge

steph

I had sex 2 days ago and Ik it’s normal to discharge after you have sex but today I’ve been getting that feeling of when you get your period and I check and it’s not my period it’s like discharge but it’s been coming out more than usual and I’m also supposed to get my period tomorrow. I’m also currently taking birth control pills I don’t think there’s much chance of pregnancy correct? And has something like that happened to you guys before? I’m sorry i just get really crazy about it