I am 27 years old and 17 weeks pregnant, when my pregnancy started I was going to the bathroom frequently, but around every 3 hours.... now for the last week or two, my bladder feels painfully full after 45 min to an hour. And then when I try to empty my bladder, it isn't fully emptying and actually hurts a little (not my urination stream, but the bladder itself.) Do I have a bladder infection or something else?