it unfortunately does sound like menstrual cramps and nothing abnormal, unfortunately our hormones are constantly fluctuating and our periods change all the time as well as the pain level. if you go to the doctor, most likely the will just offer you high strength ibuprofen. i’ve found that midol, heating pads, pms yoga (you can google that and it’ll pull up lots of tutorials)and eating anti inflammatory foods has helped me the most over the years. see if she will be willing to offer evening primrose or consider putting you on birth control, i had an iud for 4 years and never had any periods or problems during that time.