I Smoked Laced Weed And Now I Get Headaches

Hello,

 Around 6 months ago I was a very advid smoker, and as any habitual user would know, you have to have a place to store your stash. I recently turned 16, and my parents are absolutely against the concept of smoking. So, naturally storing it was necessary. But one time, I stored my weed in a plastic bag, and put that into an Oxy face cleanser container, with some of the pads still left in there. It sat over night, and in the morning my friend and I went to smoke it. Only then was it when we discovered that the weed was a bit damp/moist. Not thinking much of it, as most teens tend to do, we smoked it anyway. At that point in time, it felt as if someone was taking a hammer and smashing it into my head. I also heard noises like a fitness/yoga ball being thrown at the ground (the bouncing noise). When I was high, I would just sit there and zone out. I didn't think too much of it at the time, but now I'm having all sorts of troubles. I have a somewhat constant headache, the pain seems to be concentrated at one point in my brain, it also feels like there's constant pressure. My vision is different, it's hard to describe, but moving things seem to 'skip' around. I see a black hole in my vision when I look to the sides. My memory is shot as well, I have a hard time remembering basic things. My communication skills have seemed to go down the drain also; I used to be a people's person, but now I have to really think about what I say next to people in a conversation. The pain in my head seems to be right behind my forehead, and in my eyes. Sort of like a sinus headache, but I highly doubt it's anything like sinusitus or something of the sort. When I lay down, the pain subsides for the most part, but I still feel out of it, or in a daze. I'm rather confused, and don't know what to do. I'm scheduled for a CT scan or an MRI somewhere in the near future, but I'd like your opinion on the matter. If you know anything about the subject, please, don't hesitate to leave a comment. I fear it's something as cynical as a brain aneurysm or a brain tumor. Thank you for your time.