Glad to hear you have your life on track! Then there are two options left.

(1) You are actually being sketchy
(2) You are lost in thought and paranoia.

Number two is the most likely one, especially if none of your friends have actually said anything about it while you are sober.

It is true Marijuana will bring on paranoid thoughts which makes your situation difficult. You can relax in the thought that this is all in your head. If your friends where getting the sketchy vibe from you would they continue to be around you while you were high?! Probably not.

You say that you KNOW you should stop smoking. Did that feeling and this feeling of paranoia start around the same time? If so, then we can figure that these two things are connected. If you KNOW you should stop and you do not then that is the beginning of a problem.

Nothing wrong with recreational Marijuana usage. However, when you feel like you cannot function normally during the day without being high (as I am sure many do) you may develop a dependency on the the effects.

Whether anyone agrees with me or not, there is a line between use and abuse.