Any ideas?

Kayla
Last period was Nov 10-14 of 2015
I'm on cycle day 62
31 days past expected af (still no af)
Bfn so far, I have an OBGYN appt on the 19...ugh idk what's going on I just want to get my bfp!
I was one the shot for a year, my last dose was January of 2015, I've had cycles then I had cycles every other week and now nothing :(
I've also had lots of nausea especially lately and cramps, gas, very loose stools and my appetite has been on/off, I also cannot smoke cigarettes and drink either anymore, makes me sick and I just don't want it lol