Was my weed laced or did i have a panic attack?

the past year, ive probably smoked about 50 times. ive never had any problems with it. so the other night i snuck out with this kid and we smoked some stuff he had, which seemed straight. it looked real good for sure, but it smelled different than weed usually smells. so anyways we smoked a really big bowl, which wasnt anything out of the ordinary. ive smoked way more before and ive been in way sketchier situations. so like the first 30 minutes was chill, i was feeling it pretty good. my friend was too. so we played some music and everything was cool like always. so then we decided it was time to leave, so we started heading back. then boom, it just hit me. it was the WORST feeling ive ever felt in my life. my heart began beating really fast. in my mind i was thinking of the most twisted, terrible things ever. the only way i could explain it is like the opposite of a high. when youre high, you think of things that make you happy, and you think of random memories that make you go oh i remember that! the way i felt was like, the worst thoughts over. random memories popped up in my mind that made me feel terrible. in my head i kept saying **** **** i hate my ******* life. and all i was thinking was will i be like this forever? and it was just the worst feeling ever. it was honestly the lowest point ive ever reached in my life. so, do you think it was laced? or was it something like a panic attack? oh yeah, my friend was sketching out a little but he told me once he got back to his house everything was chill and he was enjoying his high. i got back to my house, and laid on my bed. i just kept having horror flashing in my eyes. i could still feel my high, like in my body but it was just terrible. it never stopped until i fell asleep. i woke up, still feeling it a little. not feeling high or anything, but like i kind of still had those terrible thoughts in my head. as the day went on it started slowly wearing off. there are plenty of times i smoke at night and the next morning i feel a little out of it, but this morning was different. ive never done shrooms, pcp, or spice. the only thing ive ever done is weed. i really hope it wasnt laced. this scared me enough so that i dont ever plan on doing it again. its stupid. someone please help me