Am I hopeless?

I'm curious if I have a high chance of being infertile? My ex husband and I tried for 3 years for a baby and nothing. Once we divorced, he got with another woman and they became pregnant almost instantly. I was heart broken because I was convinced it was me when all I wanted to do was believe it was him. Anytime I tried to take an ovulation test whole we were ttc... I never seen a pink line.

I have since been with other men and have used condoms or the pull out method several times. Never had a problem. My boyfriend and I have been together for almost 2 years and have just recently started not using protection or the pull out method within the past 6 months. Nothing has happened. We just had sex and it was during my supposed fertile time according to Glow. Said I had a 33% chance. I believe I may have been ovulating because my discharge was milky and sticky.

Is it possible I am not fertile? Is there any at home tests I can take to find out or do I have to consult a doctor?

Does anyone have any reassuring stories to help ease my worry? Lol.

I should also mention I am 24 and have irregular periods.