glass ampoule

Here we get TE 250 mg/ml in 1 ml glass ampoule. I am starting at a low dose, so that 250 mg will last around 3 weeks. My question is how to store the medication for 3 weeks? Any help will be appreciated, thanks.

I use Sustanon 250 I bought in India that comes in glass ampoules. I have not figured out a good way to open these. The glass is incredibly strong. When I try to snap just with my hand, I have crushed the glass completely a couple time, slicing up my hand and spilling the contents. I use gloves...