It is absolutely possible. The pot today is very high in THC.
Do you use any other drugs?
No. Pot alone, no.. but it may have been laced with something. Im curios as well, why did u started smoking pot? Anxiety? Despite what some say, pot can be addicting.. it relaxes u.. calms u.. and if u are on it to long. U will not be able to calm your self or relax on ur own.. I know this sounds like no big deal, wait to u run out after prolonged use and rethink my post .. it's a big deal then.. be care full.. I've watched a man smoke pot for 25 years or more.everyday all day.. old school friend.. and when he is out, he is anxiety ridden and wound up like a 90 day clock! Be carefull... he always says alot, its natural etc etc.. but when he is out.. he ain't so happy.. I think pot is great for medical purposes if u need it. Helps and does wonders for many different aliments.. but be careful...
Nowadays they are lacing stuff with who-knows-what so I guess it is possible. May I ask why you decided to start smoking?