Pregnant?

Hey everyone. I think I should take a pregnancy test just to be safe and keep my mind from wondering. On June 4th I had sex and he came in me but I’m on my birth control. I had some spotting on the 13th and a little on the 14th but it was brownish but that wouldn’t been the timeframe for implantation bleeding because it’s 6-12 days from conception and at that point I was 6 days early for my period and so I didn’t have a period. I have been having cramps and brown discharge and earlier it was painful on my left side when we were having sex. I ovulated on May 31st so I know it’s not as common to get pregnant that long after ovulation but it can still definitely happen. The pain was very moderate and uncomfortable. What should I do ? All opinions and advice welcome.