Trying to conceive

Esther

I’ve been trying to conceive for 3 months now and this 3rd month something bout my body is just different. I’ve been feeling nauseas and I have a sensitive smell and my boobs are really sensitive. But I had those the other two months and got my period but I keep getting bad cramps and still no period yet. I’m suppose to get my period bout 7 days. And I’m still not bleeding. HELP!!!