Does irregular and heavy menstrual cycles affect fertility?

Hi doctor,

I am trying to conceive for the past six months. So, I keep tracking my period on my phone. My usual cycles were around 30 days. Before two months, my cycle lasted for 43 days and I thought I was pregnant. But, I was not and had a period that was heavy and passed several clots. After it was over about two weeks went by and then I started spotting brown. It lasted for almost three weeks straight now and it has not stopped at all. It has remained very light the whole time.

Yesterday, it got really heavy and red again, so I thought it was my period coming around but today it has stopped. It is just light spotting. This cycle now has been 46 days long. I am not sure what is going on. I am really worried because before now my cycle was always normal for around 30 days. I had been to a gynecologist for painful periods before and he told me that I had cysts on my ovaries and may possibly be getting endometriosis. Before that I had been somewhere else and he told me that I had hormonal imbalance. Did you get any clue what is going on? Should I be afraid that I am not fertile? The longer cycles and constant spotting really worries me.

Please let me know your opinion.