You poor thing Smow, I hope the antibiotics are kicking in and you feel better very soon.
Having a warm, rather than hot, bath with bicarb of soda and/or oats might help to sooth the irritated external areas for a bit, if the skin is aggravated. I used to stick some oats in the cut off end of an old pair of tights, tie the top and put it under the running water, then in the bath and squeeze it gently, so it turns the water milky. Just be careful getting out as it can make the bath quite slippery.
Feel better soon Xx