Headache after intense meditation. What to do?

I simply returned from an intense retreat of a physique working model known as Amanae. It’s a somatic apply which actually appears to shake my energies up fairly arduous generally.

Anyway, since about midway via the retreat, I’ve felt a variety of congestion in my head however it doesn’t really feel like sickness to the remainder of my physique.

If there have been one thing like a caught power that I’m deciphering as stress or congestion in my head, what chakra would possibly I need to work on opening to get it flowing?