PAIN WITH URINATION

I had a cesarean in Feb of this year and had a tubal as well. My tubes were cut not tided and I have missed my period this month?? I do not in reality feel pregnant but do not know in fact if I am or not?? I have had severe pain when I urinate "a burning throbbing sensation" and feel as though I may have a UTI. I am in such enourmous pain that I grasp my knees when I going to the bathroom too ease the throbbing. I do not know what the problem is, there is no discharge/ no blood/ just pain. I do not have medical insurance and I have been waiting for the past month in a half to get my period that won't get here. Could it be something else beside bladder that may be the issue?? and can I get pregnant w/ my tubes being cut??