Help sex q

So I had sex with a condom on the 24th of August I ovulated most likely either 21st or 22nd my cycle is very regular that day when we had sex after we used the condom we put it in without 1 for honestly probably 5 seconds tops then that was it I was done so today got my period like normal right on time but there was pretty much nothing in the pad which never happens for me normally it's medium-heavy But when I go to the bathroom there is blood and I saw a few clots like normal and when I wiped it's bright red like normal there's just not much of it which I'm very concerned about Ik there's like no way but I'm stressing out I wanna make sure this is my period and not implantation or something and also I'm having bad cramps non stop like always and pms help ??!!!