What's going on? Help please?

Aubrey
Me and my partner has been trying since July of last year after we lost our first in May. I was 2 months and 2 weeks. We have finally decided to move along.. The thing is I don't know what's going on with me. I haven't had a peirod since September and I've took many pregnancy tests and its always negitive. Does anyone have an clue to what might be going on with me?