Dehydration or UTI!?...

Zoya β€’ always tired mommy πŸ˜ˆπŸ˜…πŸ’™
I am 11 weeks and 4 days and i have been experiencing consistent pelvic pain and back pain, it is the strongest when i walk.gets better at times after sleep. My dr said i need to drink more water, anyone experienced this..!?