Do you think I have ptsd?

Ok so I'm an 18 year old male. And about three weeks ago I got robbed at gun point for my iPhone 7 I gave the guy my phone and everything but I really can't stop thinking about it just earlier this week I was walking down the street and some guy was walking his dog behind me and i started screaming because I thought it was that guy who robbed me again, and I cried when I got home. And now it's very difficult for me to fall asleep at night. And I really don't wanna leave my house anymore. I really don't wanna see a therapist because I really don't wanna tell my family how I'm really feeling

The world was not sketchy prior to you trying to sell the phone. So don't do shady deals online and you won't have a problem. You are just shaken up is all, no serious ptsd. Just go back to your normal life and good luck catching the guy.

You should see a therapist - you don't need to tell your family about it. You can organise your own appointment, and everything will be kept confidential.

Get over it simple.
Millions of people world wide get robbed daily.
Look at the thieves in Congress.
Grow up and get a backbone pair and life.
If you insist on focusing on the robbery, U'll make urself POOR and others significantly Wealthy.

Did you report the crime? Usually therapy could be funded through the police, then you wouldn't have to tell your parents.