I used to suffer from terrrible migraines.
and they got worse during pregnancy, whilst i was pregnant i was able to take something called PARAMAX, it is a soluable sachet with Metaclopramide to stop you feeling sick. But if you breast feed they recommend you only take paracetamol.
You may find that taking tablets wont work, because with some peoples migraines their gut movement slows or stops, so the tablets just sit in the stomach un absorbed, i found i had this because sometimes the tablets would work and then other times they would not.
So i started taking soluable tablets or powders as they get taken up very quicky, and they seem to do the trick.
I also find a heat lotion on my neck or temples helps ease the pain.
Lavendar wheat bags are good too.
During pregancy i had acupntcure and that seemed to help my headaches and i also started wearing a magnetic braclet by Bioflow which has also seemed to help.
I hope this gives a little help to you, as i really sympathises with others who get migraines. Pm me if i can help any more.