Like is said earlier:

My first time smoking in 3 months.
I smoked 5 bowls, with 4 other friends.
I weigh about 115(im pretty skinny as you can see)
Im 5'5 tall
I have a fast metabolism

How long do you think it will stay in my system?
Only periodic testing with a home THC test can answer that for you realistically . Each persons body chemistry is different.

When testing yourself, be sure to use the first void of the day.