Help...

Sabrina
I'm 40 days late for my period.... The lest period I had was the end of February!!! I have taken 2 pregnancy tests in this time and they have both come back negative.. I have tender breasts, fatigue, urinating a lot more and sleeping a lot more I also cannot stand the taste and smell of cigarettes even though I smoked 15 a day for the last 5 years!! Any advice??