I had a headache earlier and took maxalt (rizatriptan). Now I have a HA on the other side of my head. I'm okay if I am still but moving makes it throb. Migraine?

Possibly. If you only took one dose of the Maxalt, (rizatriptan) you may take another, no more than 2 a day. If headache persists, should have this evaluated. Is this headache similar to or different than your typical migraine? If different, should have it evaluated. Hope this was helpful and you feel better soon. Dr R.