HELP! Bad Migraine!!! 😵🔫

Holly • Got my BFP 08/27/16!!! ❤️ Had my baby girl May 2nd 2017!
I have a super super bad migraine. I've had it all day and I still have it and it's 1am and I can not fall sleep because how bad it hurts.   My period ended the 5th so that's not the cause of it.   What could it be? I'm only 5dpo and I doubt it's to early for symptoms.  So what could it be???? Please help!