What to do when prodrome starts?

I just found out the other day what a prodrome was.  I saw it on the tracker and had no idea so I looked it up.  I now realize that I do get them about a day before my migraine hits.  I get the constipation, mood changes, neck stiffness, and yawning (oh god, lots of yawning).  So, my question is, is there anyway to stop the migraine before it happens in the prodrome stage, or is it inevitable?  I was just wondering because like I said, I didn't know about this before  get to know all I can about it.  Any reply would be greatly appreciated.