Varicella (Chickenpox) Vaccine and College

[Skye]

Alrighty. So I got an email a few days ago from the university that I will be attending.

Our records show that you are required to provide medical documentation of one of the following along with the Student Health Form: two Varicella vaccinations, immunity to Varicella, previous diagnosis of Varicella (official note from any medical personnel with approximate date of disease is sufficient).

I only have 1 vaccination on my record. I don't know if I'm immune. I've never had chickenpox before.

I told my mom about the email, and she told me to call them and ask them about it. I don't know what there is to ask about though; even the website says I need one of the three things. They aren't going to make any exceptions.
I saw that Rite Aid Pharmacy gives immunizations, so I want to call them and ask about a varicella vaccination. However, I don't know how much it'll cost.
I also don't even know if it's practical to get another one when I'm almost 19 years old.

tl;dr I'M SCREWED AND DON'T KNOW WHAT TO DO.

[Lan]

The older you get chicken pox the more severe it will be, best to get to vaccination now before chicken pox kills you.

[Skye]

The older you get chicken pox the more severe it will be, best to get to vaccination now before chicken pox kills you.

Yeah, that I know. My issue is the price though. D;

So I called my local Rite Aid, and the girl I talked to says they don't have the chickenpox vaccination right now. FML.
I think I might call a couple a little farther away. T_T