Pregnancy or ovulation symptoms?

So this month my period was super light and arrived 2/3 days early. I never once soaked a pad or tampon and it was pink. I took a test before the bleeding, it was negative, and during the bleeding, also negative. So I just thought ok I’m having an off period. Then I randomly get diarrhea (definitely not a virus)... after this ended my boobs now feel so heavy like when I breastfeeding and I’ve even had clear liquid coming out. Along with random heartburn and slight cramping in my ovaries and my back. Should I test again? Is it possible that I’m actually pregnant?

ETA: my nipples are also swollen and darker