You may be having recurrent UTI or interstitial cystitis also. As described in Wikipedia
it is a urinary bladder
disease of unknown cause characterised by pain associated with urination (dysuria), urinary frequency (as often as every 10 minutes), urgency, and pressure in the bladder and/or pelvis.
I suggest you to consult a urologist and get this possibility investigated. You need to have urine examination , culture, flow studies and ultrasound bladder done.
I sincerely hope that helps.