I Hv Been In And Out Of A And E

I hv been in and out of a and e twice in the last two weeks, first time was for very bad chest infection, received a clear xray and was sent home with antibiotics and steroids. Second time was with very bad kidney infection, sent home with another lot of antibiotics, i was sent to a and e by my gp and i am now finished all medication. Since Monday I hv been having awful pain in my legs, mostly thighs and moving down both legs at times, also hv tender abdomen and constipated, i also broke out in a rash on my face, red blotchy and very itchy, any ideas???