I took many pregnancy test

Jessica

I took many pregnancy test. I haven’t had my period for two months . Yesterday I light spotted blood and I thought I was going to get my period but I didn’t bleed anymore after that . Just a little spotting . Today I’m not bleeding at all . I have been having unprotected sex here and there. My nipples have been sore for two days as well. Could this just be signs of PCOS? I would get my period every month but I haven’t these two months .