So I'm Asthmatic and I have a cold at the moment which always seems to make my Asthma worse anyway I have a cough and my chest is kind of rattley I could really use my Ventolin before this esculates but I'm at my dads 20 minutes away in car from my mums ( where I left my Ventolin) and my mum and dad aren't friends what do I do? P.S. My dad doesn't know anything about Asthma?

Your mother needs to explain to your father that asthma can be a life threatening condition!
He can drive 20 minutes, your mother can hand him your ventolin, and he can drive back. She can hand it to you for pity's sake.
He needs to grow up. Your parents have to get along for your sake.
Can you call her and tell her all this? Can she drive? Can they meet half way?
Now you know - never forget to bring it with you again.
Another option is to see if a drugstore local to where you are can fill the prescription by calling your regular drugstore. But this can be problematic so it's just as fast to go get yours.