Contractions

Ok story time, please tell me baby is coming soon!

I am 37 weeks 4 days and last night I had strong contractions so I called up to tell the ob floor because I could time them and they were getting painful! They advised me to come in and get evaluated....which was expected.....I got up there and contractions were 1 to 3 minutes apart on the monitor but I wasn't feeling all of them! They found out I was dehydrated (which is wierd because I drank over 100 oz of water yesterday) and I have a UTI! Then gave me fluids and meds and sent me home! Has that happened to anyone else??