Hi woosa, others,
it is not headache per se. More like pressure and heaviness. It feels like things are getting congested there in head.
Besides meditation, I do asan, spinal breathing, and a couple of other pranayam. Actually when I do more meditation and pranayam, it gives me relief only. If I am able to be in meditative mood most of the time, I don't feel any problem. So I don't think stopping these practices will lead to a solution in near term.
That's why I thought if there are any targeted practices that can be done to speed up the cleansing of internal blockages which might be causing pressure build-up and heaviness in head.
Thanks.