If it hadn't been for Dad's illness I'd have been getting married on Saturday and for some reason it's really playing on my mind and getting me down. I ought to be happy: Dad was at my wedding, I've been married just over a year, we've bought a house, I have a new job to look forward to, but for some reason I can't help feeling down about it.
No need to reply, just wanted to see if getting it down in writing would help.