Am I smoking too much weed?

I'm 19 and have been smoking pot for just about a year now. over the past year i've only gone about a week and a half 2 weeks without smoking. i've been smoking several times a day about every other day to every few days. at some points daily. recently though i quit my drug habit cause the partying was getting way too out of control. now i just smoke pot. but i was doing lots of skittles and snorting lots of sedatives these past few months and have been cleaning out my system this past month. heres the thing. weed does effect your short term memory a little. but it's gotten real bad with me. i'll stand in the center of my room and just zone out for a few seconds and come back and be confused by what i'm doing. i'll be typing or writing, read it back and notice that i mispelled a simple word or mixed the words up in the wrong order completely. is this bad forgetfulness from smoking too much pot (recently i've only been smoking a few small bowls a day for about 4 days straight. then i'll run out for about a couple days then get more and repeat it. or is it cause i'm washing out my system of other substances and the chemical leave can cause memory loss maybe? thanks. btw, i smoke pot to help my clinical depression, anxiety, panic attacks etc. i'm not a loser with no life. thanks. peace.