Girlfriend won't let me go on holiday?

Try and keep it short. We are both 23 and live with our parents.
My friend asked me to go on holiday to a European country (won't say as outing) next week for 3 days as flights were cheap and we could go drinking.

I told girlfriend and she was fine at first and seemed pretty happy.
However, the next day she seemed off and said how she's not sure her parents would let me in the house for a week if I come back just to make sure I haven't caught anything.
I have a tendency to work away and i'm currently not sure when i'll be leaving, could be anytime this month or next.
We had a little tiff and I said I wouldn't go but that I wanted to go and she didn't understand why I was so desperate to go on holiday when flights have only just started opening.
She asked her parents and they did basically say if i did go i couldnt come around for a week. And ofcouse she will respect their house rules.

I'm fine with this but at the same time gutted because i really wanted to go. I'm not sure when i'll be leaving for work so I wouldn't go 7 days without seeing her incase I go that week,
Is life. going to be like this forever?
Girlfriend won't let me go on holiday?
Post Opinion