Depo shot/no period

Hello all,

I have been on the depo shot for 3 years.

Last october i decided to stop taking it for personal reasons. Well now, me and my man are ttc. I have not got a period since last september. My doctor says sometimes its normal, and she can out me on a BC that will regulate my period. But i do not want to get back on birth control. I have had positive ovulation tests, but im curious if this has happened to anyone.

Do i have to have a period in order to be ovulation/ can i still get pregnant without it?

How long did it take for everyone else to get pregnant after stopping depo?