Caroline, Fenella, wisp I'm in the same boat as you with the headaches. Decided to go for a longish walk early this morning, & that seemed to help a lot.
On a diff note, I got a pair of maternity jeans from gap this weekend. I don't have a prominent bump yet, but don't feel comfy in my regular pair, so though I'll give the full banded ones a try. Damn thing kept slipping down & I had to pull it up several times when I was walking my neighbourhood. Not sure if a belt will solve the issue or I just need to wait till I have a proper bump! What are you girls doing ?