Sorry in advance if this is long.

So I was diagnosed with endo in 2010 and was told for treatment to take BC with no breaks to prevent getting a period, which I have been doing from March 2010 until the end of August 2018. Before my diagnosis I was one BC to help with my painful periods and excessive bleeding. Thankfully when being diagnosed I was told that my reproductive organs were not impacted but that the effected area was my stomach and intestines. Got married July and hubby and I decided we wanted to try right away, I only had a period for about 2 days after stopping. When I went to my OB/GYN she put me on provera but now I have not had a period since Dec. 25 and I am not pregnant. Has anyone else has this issue of their body taking this long to regulate? Any suggestions on what can help regulate my cycle?