Help in regards to the American opportunity credit

Hello, I am 29 years old and have gaps in my college education. I started many many years ago but frankly didn’t care about college till I was in my 20s. I graduate this July with my associates,  I currently don’t have a degree and do not have 120 credit hours which is considered a bachelors degree. I have obviously been in college for more than 4 years but consistently had to take breaks. I can honestly says I don’t know how many times I have claimed the American opportunity credit and fear I may made a huge mistake in my past filings (one of my biggest fears) - did I make a huge mistake or am I ok if I claim the American opportunity credit this year.