Help Please!

So in may my period came on the 15st and in  June my period came on the 1st very bad cramp and a lot of blood discharge. I've been having unprotected sex for a while with my bf and now it's July 14th and period haven't came on the 1st and still haven't started but I've been feeling nausea, fatigue, bad back cramps, sore nipples, excessive appetite, tiredness, anxiety, heat flash and very gassy but on today I been having really bad gas and really bad back cramps likes my period about to start????? Any help what do u think????? I'll let you know if my period starts tomorrow !