Popped Magura MT7 piston, advice.

So I managed to pop a piston out on MT7's or almost.It lost some fluid but pushed back in, before it came out all the way, I think. I've bled the brake (front) and rode it about 15 miles off road, with a longish damp descent, brakes work fine. I'm away for a full weeks riding next week, is there anything I need to be worried about or have looked at this week before I go?

Thanks