I just recently went thru the exact same thing. My husband and I planned a trip and he was really looking forward to it, but because of a chronic illness I have, it sent me straight to anxiety ville. I was taking Valium and it was helping a little, but not enough. Doc changed me to Xanax, which really really helped.
I just returned from my trip this past Tuesday. I want you to know that I had the best time ever. All that worry and anxiety, and everything turned out so wonderful. I think my husband and I even bonded closer. During the entire time I took the Xanax 1 in the morning and 1 in the night, and I didn't have any problems. Maybe you can ask your doc about that, it really helped me alot. I am no longer taking it, but know that if that ol anticipatory anxiety acts up again, I have the correct medication. Plus I will soon start some therapy.
I hope you get some relief from your doc and are able to go on your family holiday and enjoy your time with them.
Been living with Crohn's Disease for 32 years. Currently on Asacol, Prilosec 60 mg, Estrace, Prinivil, Diltiazem, Percoset prn for pain and Calcium. Resections in 2002 and 2005. Recently diagnosed with Fibromyalgia and doing tests to see if I have Inflammatory Arthritis or AS.