Possibly Abnormal Sensations

Hey buds

I don't smoke weed often. When I do it's with a select few buddies and always the same stuff to my knowledge. My question refers to my experiences each time I smoke.

Of course I've got the usual "normal" feelings..but something changes. After taking a few hits, the right side of my body goes numb. Not vaguely half, but exactly half..even half my tongue. A few more hits and it's not just numb..it's gone. I can't even sense it; my left half still being fully functional. I suppose I wouldn't be so worried if my whole body went dark, but being exactly half has got me scared. And the sensations last. For days afterwards I feel my right half differently. I can feel it. One night I became so stoned it was two weeks before I felt a sense of normality return. Even now there is a different vibe to my right that's been with me since my first time. It's not the weed, my buds all smoke the same stuff daily and they're fine. Maybe I just haven't built up any tolerance? One last thing to add - I've been shown pics of myself being stoned. My right side is notably sagging, like I've had a stroke or something. I don't know if this is purely psychological or true muscle alteration but I'd like some suggestions. If anything a more seasoned stoner offering their take on all this. I appreciate any and every one of you who have taken the time to read and comment on this. Thank you.

-J