Really scared, what should I do?

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You have any big friends or older brothers?

Okay, just incase you don't. Firstly, try find an alternate route to your home, a way in which he won't be able to find you, etc... Walk home with some mates?
If you can't do the above, then try out Xantar's way first, and if worst comes to worst, you may just have to consider D_Beckham7's option... If you do decide to carry a form of protection, try pepper spray (CS spray), hehe...

I would try and avoid fighting this person. If you're lucky, this might be one dumb joke...