I Have A Ligament Problem Which Feels Like My Hip,

I have a ligament problem which feels like my hip, I have been prescribed the use of Diclofenac Sodium Topical Gel 1% and reading the use I note a potential problem with blood pressure. I am on two HBP tablets in addition to a blood thinner. How dangerous is it to apply this med to my hip area { prescribed 4 times per day]