Headaches everyday.

Dull pounding head aches! No matter how I lay my head, I get relief for a moment & then it begins to pound again. It seems at the end of everyday this happens. I definitely drink the recommended amount of water a day. But it just never seems like enough. Also makes me pee every 30 minutes which drives me nuts. Only 13 weeks pregnant & wondering if the head aches will subside?!