Just so upset

So our Daughter gets married on Saturday, very low key. Registrar then a meal for family and a few friends. It's what she wants, they have 2 children.
Its taken me a long time to find something that i feel ok wearing. I never wear dresses, makeup etc
I found a dress that i felt ok in, and everyone seemed to like it on me.
I acknowledge that I'm overweight and unfit, I've tried to address this in the past months but ended up injuring my knee making me so much worse.
We are midst of a lot of upheaval on the house and massively behind schedule. Originally i wanted to move, my Husband didn't.
I said tonight i really wish we had moved as things aren't going to plan and now both of our health isn't great (he's had an injury to his back)
He, i suppose retaliated saying we are only 60 and shouldn't be feeling we need a bungalow for health reasons.
He then said we need to get fitter (agreed) but then said I'm worse as i "REALLY" need to lose weight.
This may be the case, but I'm so upset.
He knows it's been a struggle for me to find something i feel semi ok in for the wedding. Now i just feel like I'm going to look like a fat horrible mess.
He's apologised and said it came out wrong, but I'm so hurt and dreading Saturday.