I have been feelind tinglings and sort of liquid movement in head , aslo sometimes I feel veins bulging too ... This all started when I smoked pot . I felt a buzzing in my head , I felt very dizzy instantly that I stoped and was so scared that I forced my self to sleep , in the hope that when I wake I will feel better .but when I woke up I felt the strongest head ache. , which lastest for about a month , month of pain , it was unbearable ,the feeling of constant headache .... The past six months have been hell for me , at that time when the head ache started I was constantly falling sick with no improvements .I don't really smoke , at most just a rhap of mariguana in a week .... I don't know what is wrong with me , it has been six months I am still feeling little headaches and pin like feelings in head . Now it comes and goes !.. I also noticed a swelling at the right back side of my head. I am really scared ...I am 21 years of age ..........