I had miscarriage in marchand since then, my cycle has been 40-45 days long. what are the fertility perc for cycles that long? appt sched, just advice

Depends: If you are still ovulating but just have a prolonged cycle the average rate of pregnancy per cycle is about 20% however if you are having irregular or lengthening cycles due to anovulation (not ovulating) then your chances would be much lower. There are a few simple blood tests that can be done to evaluate you, also an ovarian cyst can occasionally cause delayed cycles.