to quote a movie:
"Never give up!! Never surrender!"
I say keep going till you know for sure, don't lose hope yet, you may find it has been a mistake or that as you've been crew before they may be willing to let you work - I mean, you've demonstrated you're capable, even had a few minor emergencies situations there if I recall correctly!! They'd be mad to let something little get in the way of having a fab crewmember like you!
Big hug and don't give up just yet!!