Ibandronate and side effects

I am six and a half years on from BC diax but diax 4 years ago with osteoporosis. I have low tolerance for bisphosphanates with GI irritation but recently agreed to give ibandronate another try. I am on my second treatment and experiencing a sort of prickly heat type rash, it flared up on first treatment and this one 7-10 days after I took the drug. Had it for almost a week now. I know side effects list “rash” but I just wondered if anyone else has had the same thing?
Jeanie x