its 5 days before my wedding and im devastated

as u all know my cat has been sick these past few months. well the vet said he believes Boots has cancer and we had to make a decision whether to do surgeries, try all these meds and tests, and hes already at least almost 17 (could be as old as 19- we found him 16 years ago). The vet said if we decided against this, and to put him to sleep, he wouldnt try to talk me out of it, becuz it may be best for him (since we all believe Boots is in pain). ive been fighting this for weeks cuz i didnt wanna feel like i was giving up on him, but after seeing him cry every night, without being able to do anythig to comfort him for months, and his attitude and demeanor changing everyday,i had to do what i thought was best for him, so i said goodbye to him this morning, and we put my baby to sleep. I am absolutely devastated, but know it was for the best.
thanks for all ur support over the months ladies, i greatly appreciated it.