IUD Expulsion??

ok so! i got my IUD put in about a month ago & am due for a check up in like two weeks. insertion was kind of painful and i had regular feeling period cramps with minimal bleeding the next couple of days but then it went away - so insertion and after was fine. fast forward to now, i was due to have my period last week and the only thing that happened was days of brown clumpy oxidized blood that would come out. there was only one day where i was having incredibly painful cramps with fresh blood that looked more like blood from a cut or something and then it went back to the brown oxidized blood. this “period” has lasted a lot longer than my regular 4 day period. like i mentioned during the last week i would have MASSIVE cramps and just would like to know if you guys think this could be an expulsion of my IUD?? i wouldn’t think this would happen given that i bled a couple of days after my IUD got put in immediately after i was done with my last period, so the “bleeding” now was a surprise given that i thought my uterine lining had already shed. also, checking strings to see if it has moved any is out of the question given that my hands are way too small to check lol. thanks for the help in advance!