Can someone help me ?

I’m so confused with the way my periods are now. I did not get a period November or December which I thought i was pregnant. Now it is starting to seem like I am getting my period every two weeks. I started to spot on feb 8 and I thought it was just spotting but NO I’m thinking it’s my period. TMI...The blood is way more then spotting kinda like a medium flow. I stop taking birth control in September. If I am getting my periods every two weeks should I call my dr or just let it go. Also am I even ovulating? When would I ovulate then? I’m so confused..... what do I do?