So basically I had unprotected sex July 26th but I'm on birth control and he pulled out (however at the time I had been very bad at taking my pills) then I was having pms/pregnancy like symptoms, I was supposed to get my period on August 16th but delayed it with my birth control because I was going on vacation(stupid I know) On August 19th I was paranoid that I might be pregnant so I took a pregnancy test at night that tested negative(21 days/3 weeks after sex) Once i tested negative all my pregnancy like symptoms went away so i thought it might've been anxiety and just in my head. I tested again a week later like recommended and that came up negative as well (took at night again) I'm supposed to get my period in about three days but about 10 days before my scheduled period I missed a pill and doubled up and then the next day I took it late. I started bleeding for a few days. Now I'm having anxiety that it may have been pregnancy spotting or implantation bledding, or it could've just been breakthrough bleeding from missing a pill. I'm having pregnancy/pms like symptoms again. I have anxiety issues so I can't tell if it's just all in my head or does it sound like I may be pregnant! Help

P.s. haven't had sex since the 26th of July