Strange lumps

Hi, not sure where to start. I'm 29, I have a copper coil and had it for about 5 and half years and upon trying to feel if I could feel the strings still in place (I couldnt feel them) i've noticed so fairly big lumps in my vagina maybe by where my cervix starts. Im Sure they aren't normal and now I'm worrying. I had a smear test done in january 2019 and had results in March 2019 which said everything was OK. I do get occasionally bleeding during sex sometimes and have done over past 3 years. Are lumps like that normal? Any help would be great.