Lots of water but no pee? TMI maybe.

I'm currently 13 weeks pregnant and was worried about dehydration so I've been trying to drink at least 8 oz of water every hour... well up until now I've been having to pee about about every 30 minutes but suddenly realized I havent peed at all today. I started keeping track and I've drank at least 32 oz of water in the past 4 hours and no pee! I felt like I needed to go and sat down but all I got was a trickle and nothing more. no pain or tingling or anything, just suddenly can't pwe. I'm a bit worried. Anyone else ever had this happen? This is my second pregnancy.

Update:

So I didnt go the rest of the day and for up at night and decided to try taking a hot shower and it helped a lot with the discomfort and a couple hours later I went! 3 times in 1 hour. Lol