Am I pregnant or is it birth control

Kasi

I’ve been dealing with a lot of weird things lately I had my period this month but it was only 3 days I am on the birth control patch but my periods have always been 7 days so it was weird I also was having spotting/bleeding my first month of birth control (I have only been on BC for 2 months) . I also been having cramping and thick white/clear discharge sorry TMI, my breast have been hurting the past few days really bad and my nipples are a little darker. As with more symptoms I don’t know what’s going on I took 3 tests and one was invalid and the others were neg. I’m just curious because I haven’t been feeling the best