help me!!😩

ummm so long story short , me and boyfriend were having protected sex on the 28th when suddenly the condom popped and we may have think some of his sperm got in me , i am on bc and we are protected every time. i am spotting some brown discharge and little to nothing blood on my tampon but when i put down a pad nothing comes down ?? i also was supposed to get my period yesterday (july 7th) i’m not sure what to do , could i be pregnant?? (side note: i’ve also been really emotional lately && i’m not sure why)