Hi. I Smoked Weed About 5 Months Ago. I Don't

Hi. I smoked weed about 5 months ago. I don't smoke often. When I smoked it I got nervous, numb, had blurred speech and puked a lot. After that I've had constant pressure around my head like a headband is constantly on my head till this day. I feel a bit light-headed and have headaches often. Will this all go away and is this common? I just want to feel relief.