Let me just restructure your history, you had an abortion
and after that you had an IUD inserted, right? Having removed the IUD in september, now you are trying conceive. An indwelling IUD sometims may cause an infection or inflammatory response in the uterus and tubes. your lower abdominal pain
and pain during intercourse
may be related to that. I suggest get a transvaginal ultrasound
to assess the uterus and tubes and consult your gynecologist to rule out PID. Once treated, the pain issues should subside.