Birth Control and period

I was on birth control for about 7 months. I finished the pack I was on and did not get my period on the last week while taking the placebo pills.

(I don’t know if this matters but I had missed two pills in a row the week before)

This has never happened to me while I was on the pill. I had what I would consider minimal spotting the next week. It has been two months since I stopped taking the pill (we are ttc) and I have not yet got my period. Is this normal?