What is happening to me I'm so concerned I'm devoloping a mental illness what should I do?

Ok so I'm 16 years old I had smoked some weed that was a higher dose out of a pipe and I had a panic attack and was very paranoid. And this happened 2 months ago on February 14th. I'm very concerned about what is happening I think I've became anti social like I'm always quite and I know i never been this quite before it's like i always have to force myself to talk so I can act normal around people I know I'm even quite by myself I don't even think out loud. I'm also having other problems. I can't seem to laugh at things no more like my emotions are numb I can't really feel happiness sadness and anger. It feels like i have to force everything I'm so concerned I may becoming anti social and loosing my personality. Have anybody experience this from a panic attack from smoking weed??