Hi i'm currently trying to have a baby but i cantt in the past i've had a abortion could that be why ?

Many possibilities. : Most quote an average of 6 mo trying before achieving pregnancy and few would consider a fertility workup needed after less than a year of trying. There is no reason to dwell on the past as if anything it shows you can get pregnant. There is also a male component to the issue and if this continues your partner will need to be included in the evaluation.