Very frequent urination

I'm having very frequent urination. Not burning or itching. When I try to lay down to sleep, I feel like I constantly have to go to the point that as soon as I go I get no relief and it's like I haven't went at all. I can't fall asleep with the constant urge to go. It's been two days like this and I can't take it. I've drank plenty of water to flush my kidneys and ease up at night so I don't have to go constantly because of that. I had a UTI a few weeks back and this is way worse. I talked to the nurse practitioner today and honestly felt like I was treated like I was stupid. She said that doesn't sound like a UTI. I am miserable. All I want is to be able to sleep. Any suggestions to help?