I used a foil pipe for weed

during my ninth and tenth grade I was always trying to use the most discreet and easy methods to smoke my weed i bought. Of course like many other parents mine were very strict about weed and if my mom smelt it in the house, i would be fucked and my allowance would be took away which would consider me to be fucked since i couldn’t cop more weed. I’d admit for those 2 years I was heavily dependent on it and I never knew how truly depressed I was until I took a t break during the start of my 11th grade. But during the times where i would constantly be high 24/7, I would either have to smoke outside or inside when it was cold during the winter. So when i smoked outside id use joint wraps so that wasnt something to worry too much about but for about 6 monthes straight or maybe even more I would constantly use a tin foil pipe and blow the smoke into my bathroom fan when i was home alone. The worst part was that sometimes i would use the same pipe for over a month or two and i never cared about the black tar accumulating around the “bowl” in my foil pipe. Its been about a year now since ive last smoked out of a foil pipe and i now only use papers but im worried about my past decisions later affecting my health in the future. Can anybody give me some truth behind what side effects I might have for the 6-8 month foil hiatus i had?