I know every one is different however what was the wait on your periods coming back to normal and then conceiving after having depo injection?

My last injection was May 2019, in November 2019 I had brown discharge then December 2019 had a small period mostly brown blood again which happened in at the start of December and the end and then January 2020 I had what I would think to be a proper period and then nothing since.. i have had like the period pain signs but nothing comes to it.. I know the first thing would be to take a pregnancy test but I have no reason to believe I am pregnant I don’t feel any different to normal and with my first pregnancy I felt so poorly/change in discharge everything but I don’t have anything at all.

Any advice or comments would be muchly appreciated!