Help?

So I'm 4 almost 5 days late for AF but tonight I got some mild not really harsh cramps and normally I get them really bad my first day but what do you girls think? Does it sound like I'll start or not? Sorry you girls this is my first baby or soon to be baby and I don't know what to be looking for? So all the help the better. Oh and sick all day today :/. So anyone had this before and been pregnant or not ?