Hi Sarak,
I was getting really really bad headaches also during my pregnancy and my doctor advised me that I could have Panadine. They got that bad due to sinus and also giving up caffine that I started to take them when it got really bad and it did the trick beautifully!!!
So if you feel you need to check with your GP.. do so and grab yourself some panadine. If you are feeling stressed ect with headaches it can just put more stress on the baby.. (that is what my doc said)

Good luck and I really hope you feel better

xoxoxo