What Causes Spotting And Abdominal Discomfort Post IUD Insertion?

Hi. I had an emergency c-section after 21hrs of labor (2.5 were active labor but he was too big / my pelvic opening to small to burth him vaginally) about 9mo ago. Now, i ve had about 2 full periods and some irregular spotting at most. After giving up on breastfeeding due to low milk production, I began taking hormonal birth control at about 3mo postnantal. I experiences a resurgence of my (believed to be hormonally related) migraine condition, so I had an IUD inserted about 2-3 weeks ago when i *should* have been menstruating. I was told to expect the procedure to inspire my menses, but it did not - I have had some spotting but very little. Now, I began to have some abdominal discomfort at night when lying down. I am concerned that something may be going on as a result of my c-section, particularly because I had a history of multiple miscarriages before my son was conceived. Should I be worried about a condition like Asherman s syndrome, or something else, or am I being a hypochondriac?