Teenage pregnancy scare? I need some help!

Hello and goodmorning!

My period is currently 5 days late and my breasts have been getting sorer and sorer as the days pass. Im also constipated.

I have not had sex at all for many many many months ( Im trying to practice abstinence ) the only thing my boyfriend and I have done Is dry hump ( Him in boxers and shorts and me in panties and shorts ) along with he came over the other day and didn't notice his basketball shorts had a penny sized hole very close to his penis but he was still wearing boxers underneath his basket ball shorts. He did get hard that day and we did dry hump a little again but thats it ( My pants never came off and his basketball shorts and boxers never came off ) Its just that penny sized hole in his shorts near his penis that has me worried.

The only other thing I have done is masterbate alone by myself.

Im so scared I might be pregnant somehow. This is my worst fear!

Should I get a pregnancy test? Or?

PLEASE HELP!