Boobs hurt, discharge and nausea ...am I pregnant again?

Had my girl 2 months ago, I have had a very light period and stupidly we had sex without protection a few days before(completely forgot to since we haven’t used protection in 2 years). I took the morning after pill but I’m worried that maybe I could pregnant again.

Past couple days my boobs have felt fuller and one has been leaking, I’m not breast feeding, have had a couple days that I felt a bit sick too and I’ve been having VERY think snot like discharge.

Not sure if I should test or when I should, anyone have any advice?