Off my bc and have a question

So I got off if my birth control last September. I was on it for seven years. I had my initial bleed and then after that I would have a cycle about every three months. I would take tests to periodically test but I have always gotten negative. Now this most recent cycle has been almost five months and nothing yet. I took a test last week and it came out negative. I'm at that point where I'm about to get married and I'm not preventing but I'm not trying either. I'm letting whatever happens happen. I'm scared though. What if I'm broken?? My dr said we could see how it all goes and see if I regulate. But has anyone every experienced this or heard of it?? Help please.