Bladder infection!

I have a UTI and I'm in AGONY! I already started my antibiotics last night but the pain isn't going. I'm drinking loads of water but it's making my stomach bloat and hurt so much. I can't even make it to the toilet in time I'm wetting myself. And to top it off this infection is making me bleed. Doc recommended to pee in the bath which I've been doing but there is so much blood and skin coming out it's gross. Sorry for the TMI!