You probably have an overactive bladder. You need to see a physican. They will put you on the new medicines for overactive bladder like Detrol LA or Vesicare. As for the being thristy--sometimes this is a side effect of medicines but you really need to be checked by a doctor right away.
Hope this helped and everything is fine.
I don't have UTI. I was already checked for that and I don't have any pain. Maybe it's just part of life.
I guess you really need to see a doctor if your urinating a lot. I have friends who drink things like water, caffeine etc and feel the need to go to the toilet a lot, for no real reason.
It could also be a urinary infection but you havent mentioned any pain so its not likely.
And the more yellow/concentrated your unrine is means you need more fluids.
Hope everything is ok though!