Cycle

Okay ladies so I have a question. Last month at the beginning of the month, I had my birth control device removed from my arm because it was giving me issues. So my Dr. then prescribed me the mini pill. Started it, took it for a few days and then my boyfriend and I decided we wanted to start trying for a baby. Well in this time I decided to help us out I’d download Glow to help me track things. Well I realized I hadn’t had a full cycle since beginning- mid October and it is now December. I was just curious on about how long anyone thinks it would take me to become fully regular again. It’s been a little difficult to track things without knowing when exactly I should expect my cycle. Any suggestions are welcome. Thank you so much :)