both ways: I am headed home. I am heading home. Use I am heading home because it is grammatically correct. "Headed" is the past tense of the verb so would be used to tell what was done in the past and not the current situation.
He was headed for Africa
He was heading toward California and at the end he headed toward India.
The ship was originally headed for Virginia.
She would have headed back to England, to her home port of Southampton with another load of passengers, mostly Americans heading to Europe on holiday, and returning immigrants heading back to their own countries.
The duration of Heading Home is 3300.0 seconds.
If you were in downtown Chicago and headed to Oak Park, you would be heading west.
Before heading home at the end of the chapter, Mr. Utterson visited Dr. Lanyon's house to inquire about Dr. Jekyll's well-being.
When you see a rapidly approaching truck heading straight for your car, you say, "Our father, who art in heaven...
The Pilgrims were originally heading for Virginia.
You are going home
You would be heading East.
A meteorite would crash into a rocket heading towards mars