Can smoking Marijuana cause Schizophrenia?

I started smoking about a year ago. I used to smoke every day for almost 6 months, but I stopped recently and have been clean for a few months after. In the last months of my smoking I would get extremely paranoid, and scared of everything. I recently stopped smoking, but a few ago I started to feel strange. I get really paranoid even when I'm not high. And when I am, I would always hear things that aren't there, like a chainsaw or police sirens. I would also feel like I could hear other people whispering about me. When I'm not high, I'm terrified of being left alone or in dark places, I never used to be scared of that before. I always get really freaked out sometimes that something will just pop out at me, like a monster or something. I get so freaked out easily and if a comb so much as falls on the ground and startles me I'll start crying. also recently I've been very isolated from my friends and family and I have no drive to do anything and I've just been feeling really low. And just the other day I woke up in the middle of the night from a terrible dream where I was just being immersed in darkness or something even though I knew it wasn't real, but all I could do was scream. Should I be concerned? Or is this just nothing? I was never like this before I started smoking.