I often go to the bathroom at night.

I am worried because I often go to the bathroom at night. I usually drink a lot of water and also go to the bathroom very frequently during the day. However, since I go so often at night, I can't sleep well.

Is frequently going to the bathroom at night a sign of cystitis? Or should I see a doctor for something else? I'm worried about not going at all, but I'm also worried about going too often.