Bugger, migrains are awful things
I know everybody is different but I used to go and have my kneck cracked to realign everything. A little drastic and I hated having it done despite there being no pain involved. I used to have that awful fear of waking up dead so to speak like when they crack necks on the movies!!!!! Used to feel so much better though.
Perhaps bub has moved things around a bit in there or possibly putting pressure somewhere to cause the migrains.
Also some peoples diet can affect migrain activity. Do you drink a lot of coke?
I have a friend who used to suffer dreadfully from them, 2-4 a month. She tried everything and ended up in desperation at a natropath who prescribed a series of natural remedies. She hasn't had a migraine in 2 years!!
Everybody is different I know but seeing you are concerned about the quantity of panadol you should look for some alternative relief. I personally hated taking anything too when I was pregnant.
Ohhh have you had your ears checked? Could you possibly have an ear infection causing them?