Trying to conceive

My husband and I have been trying to conceive for two months now. My period tends to be all over the place so it's been hard figuring out when I ovulate. Although my doctor says that I am healthy and shouldn't have a problem having a baby I am a bit worried since I had done in the past a medicated abortion (personal reason) They told me that it does not give me issues trying to conceive later on and will only make me more fertile. Does that make a difference with trying to have a baby? I am 28 years old.