Short term memory loss

I have always had horrible long term memory issues. Recently my short term memory is awful. I can be thinking something and completely lose my train of thought. Same thing while trying to hold a conversation. I can be telling something to someone and they respond and by that time I have completely forgot what we were talking about. My fiance says it’s the weed. I vape all day long and have for over a year. The short term memory loss is recent. A month or so

So do you think it could be the weed? I feel like I should tell my pcp to rule out something serious If you were in my shoes what would you do? TIA