I have pain in rib after reconstructive surgery. Any suggestions?

Im 10weeks after masectomy and immedoate reconstructive surgery.i have a very bad pain in my left rib at top.simce day 1 i thought it was the drain pulling or catching but after drains removed still there.consultant 1st put it down to bruising but now doesnt know.its there all time and gets worse on and off.it really is draining me.my breasts are still slightly filling with fluid if been getting them syringed every 2weeks Can anyone recommend what to do or what this can be?thank you kindly