What Are Light Bleeding And Cramps Post Unprotected Sex Suggestive Of?

im freaking out. I am on birth control and I know that I don t ovulate, but I do have an app that I use to keep track of my periods. I had sex 5 days after projected ovulation on 12/22 and he didn t finish in me that im aware of.... a few days later on 12/26 I noticed a little bit of red blood when I wiped, and that lasted for a couple of days.. I took a pregnancy test either the 27th or 28th (cant remember exactly) and it was negative, I am still freaking out at this point (because that s how I am) and so on the 29th I took another test, also negative... and I was supposed to get my period on the 30th.. I woke up with some light flow, mostly red and got lighter throughout the day?? so I took another test today.... also negative.. im having mild cramping but im just really paranoid at this point..