How To Confirm Pregnancy Despite Taking Contraceptives?

IM SO NERVOUS! I NEED HONEST OPINIONS. Im worried, so me and my boyfriend messed around on Valentine s day, we DIDNT have sex we just messed around. Throughout this he never came but he did have precum and I heard precum can have sprem in it. I m not sure if the precum touched my vagina or got in. I take birth control Im on my 3rd inactive pill (I usually get my period around the 3rd or 4th inactive pills)! I forgot to take my birth control (around the 4th day of the pack) 2 days before we messed around but the day before we messed around I took that days and the missed one. On the day we messed around I took my pill hours before I saw him! Im so worried that I m pregnant because I have been out of breath fast & I just feel like I am :(