Help or advice

So it’s been about two months since I’ve gotten my period. I was supposed to start my period Sunday but all I did was bleed for one day. I’ve noticed that I’ve gotten some abdominal pain, it happens every now and then. More recently I’ve noticed that I get nauseous with just about everything I eat or drink.

I’ve been on birth control for about the past nine months and this is the first time I haven’t had my period while taking it. I’ve taken quite a few pregnancy tests but they all come up negative. My husband thinks I should go to the clinic and get a pregnancy test done there plus some blood work to see what’s going on.