Just please check your blood pressure and really you need bed rest, lay on your left side. Try to avoid being on your feet. If you sit, hope you have a lounger and prop your feet up with a pillow. How long has this been going on?
If your blood presure is high, you must go to a Dr immediately or risk a stroke. You will likely be put on Labetol. I have no reactions to it and take it before my period as the hormones cause blood pressure spikes and migraines. My daughter had a bad reaction to it, but her condition was far more serious....as in emergency and possible stroke. And must take it anyway.
Sorry to scare you.
It could be nothing and quite simple. But first I want you to check this much and know that you are safe.