I won’t stop bleeding :(

I’m 21F and just started semaglutide through a weight loss clinic. I have a copper IUD so my periods still continue, my periods have always been consistent only having 5-7 day periods with my heaviest days being 1-3 days. My first shot was about 3 weeks ago, I was on my period (but should have only had 1-3 days left). But the bleeding never stopped. I go back exactly 7 days after my 1st shot was given, I told them my period hasn’t stopped (it’s very light, brown like old blood, but still hasn’t stopped when it should have). The nurse tells me that she has never had this issue by any other patients taking semaglutide from them, and then proceeds to “look it up” and comes back to tell me it is NOT common and the semaglutide should have no effect on my period. So at that appointment (I was supposed to get my 2nd shot) they decide not to, to see if the bleeding stops. I go in 7 days later again, on that day the bleeding was very minimal but still going on, to the point where I need to wear a liner. I tell them I want to continue the shot and they give me my 2nd one. I also had an appointment with a OBGYN later that day, I explain all of that to her and she immediately tells me all my test came back fine, and it’s most likely the semaglutide. That it affects hormones, and weight loss can affect the period, and in general, introducing something to your body takes time for it to get used to, and that stress can also be a factor. I should mention, in case it wasn’t clear, from the 1st shot I had, to 7 days later when I was supposed to get my 2nd shot, I lost about 4 pounds. When I went back 7 days later (and really got my second shot, since they didn’t give it to me the second time, I stayed the same weight). So it’s not like I lost a drastic amount. Has this happened to any of you? What do you think I should do? *also as of right now the bleeding still hasn’t stopped, and I should be actually starting my period soon since the last time I had it, if u don’t count all the little bleeding everyday in between