Iud problems

I’ve had the mirena IUD for about a 2 years now. I’ve never really noticed this before but it could have happened a few times but now I’ve been getting B.V. I feel like all the time. I’m very clean and I only have sex with one person so there’s no reason I should be getting B.V. That often. I’ve looked it up and there have been links between iuds and that causing an imbalance of the good and bad bacteria in the vagina and that can cause it but I’m not sure. There’s like this weird smell it’s not necessary disgusting but more like a vagina smell that’s really strong lol that probs don’t make sense but it’s just weird I went to the doctor the first time I noticed it and she gave me antibiotics and that took it away for like a few months and then it came back. I did that 2 more times but like I know it’s not good to constantly take antibiotics either. I’ve been taking a probiotic meant to help the bacterial balance in the vagina and I feel like it might be helping a little bit. I was just wondering if anyone else be having this problem and what y’all did to help it.