Thank you so much for sharing this. I still have pressures in my (fore)head after I opened my third eye, two years ago. It mostly happens around the evening/night, or when I'm very excited/passionate about something. Sometimes it feels like my head is going to explode. It's doesn't feel like a headache, just a big pressure. It radiates through my whole forehead, sometimes there's also a tingling feeling in my teeth. Like you said it feels as if there's too much energy/information being piled up there. I don't think it's something good or bad, I just think my physical body can't handle that much energy/information.