Period after Miscarriage

Hello! I have a strange scenario happening.

I miscarried last July and had my period come in August, September, and October… Erratically… but they always ended up coming those months. I was only a few days off the first two months and in October I was 10 days late.

My husband and I stopped trying around then so I could regulate and have been using protection since around then.

November came along - no period. I tested to be sure - negative.

December hit… no period. I tested again - but nothing. Again - we HAVE been using protection… but I want to double check! (Like multiple tests have been taken.)

And then I missed it for the third month in a row now this January.

So now I think it’s safe to say my period has officially disappeared on me and I’m NOT pregnant. No positive tests - no symptoms - etc.

Has this happened to anyone else? I think I’m going to call my OBGYN this week about it.