You have my sympathy, a few years ago my bladder became over sensitive and I did have a couple of bouts of infection which was cleared with strong antbiotics. My bladder is not like everyone elses I have decided. I cannot go longer than about 2 hours with out needing the loo so I usually plot my trips anywhere. I find any stressful situation makes me produce gallons of wee resulting in frequent trips. Having a cup of coffee out has to be judged because it will just work its way through quickly. I did have a check up because apparently the inside lining can fall down which results in the sensation of wanting to go all the time, in my case it hadn't. I take a cranberry pill every day, drink enough and try to forget about it. Did you have a catheter with your c section because this can cause soreness of the piping. I agree bladder pain can get you down. I hope you get an answer soon.