Worried about this pain under rib

Almost 3 weeks ago I started with tender skin on my upper left torso and side.  My skin felt tender like it had been stung and even my t shirt felt rough on my skin. I thought it might be the start of shingles which nurse at my GP surgery said it could be.  Was told nothing we can do, just paracetamol and anti-histamine cream.

It has now changed to a bruised feeling under my left rib which is also in my side and back.  I feel extremely bloated and have little appetite.  No other symptoms. I went back to GP after a week and she was very thorough but didn't know what it could be.  Was told to just monitor.  Went back again a few days later as it was no better and saw a nurse practitioner who said they would send me for an ultrasound.  I've been just waiting at home since but the bruised feeling has turned to little "jabby" feelings.  Not even that bad, I dont need paracetamol, its just achey.   

I'm just getting myself into a state over whether it could be cancer.  I had a hysterocopy about 5 weeks ago and haven't stopped bleeding from that which I have mentioned and they are going to do a blood test to check for ovarian cancer markers but the achey pain is in the wrong area for that - although I am having crampy pains in my lower stomach. 

I had a sigmoid colon perforation 2 years ago and was diagnosed with diverticulitis/losis so wondered if it could related to that/a flare-up perhaps?

I went back to GP a couple of days ago as I feel I need to have the ultrasound or some type of scan asap but she said it's a case of waiting for the appointment to come through.  I'm considering just going to A&E as the worry is just driving me mad.

So sorry for the long post and thank you in advance for any replies on this