It won't go away!!!

Almost 3 weeks ago I started filing a cramping sensation above the public bone, and it felt to me like a bladder infection. Eventually I started feeling a burning sensition almost all the time in my lower body - but not when I pee. Peeing is just fine. Sometimes I pee a lot, and sometimes not. But the buring feeling is worse when I have to go then when my bladder is empty. And sometimes I have spasms or sharp cramps too, when it is really bad. And I get emotional.

The doctor confirmed through a urine test that it was an infection. She gave me an antibiotic, and I started taking cranberry capsules. I also used a uninary herbal formula...it improved a little but did not go away. I was given another antibotic...and eventually some chinese herbs and acupuncture...but it didn't go away. I responded to these things, but was still taking them when my symptoms took a dive. The doctor gave me 3 days of yet another antibotic...and at first I thought I was cured, but on the third day - today - I woke up at 5:00 am. and had to go to the bathroom, which is unusal for me, and shortly afterwards had what felt like an anxiety attack...my heart started racing and it was hard to breathe. I had to get up and pace around breathing into my hands for five minutes or so. minutes.

Now I am buring all the time again, even tho I am still under the influence of the last Antibiotic (one a day and I finished yesterday) and taking the cranberries and chinese herbs (just re-started the herbs this morning, I did not take them while on the antibiotic.)

What is this? Could it really be a bladder infection, or something much worse? Like cancer.

I have no insurance, so being really sick is scarey. I also had an emotional breakdown last year, a severe one, so I could have done myself in.