Did I mess up on my dress?

I am going to start off by saying that I have bad body dysmorphia after gaining 30 pounds due to life saving drugs. I could loose the weight for the wedding by going off them and risking my health but I’m trying to accept that this is my body now. I went into wedding dress shopping with the only goal of not having a break down about dress sizes and how things fit me and I did really good. I was going for a simple more casual dress but put this one on for shits and giggles and immediately said “I feel like a princess” and when am I going to dress like a princess again? But now I’m home looking at the pictures and just seeing how large I look in it, maybe I should have gotten something better for my body shape? Did I mess up by getting this dress? Last picture is the veil I’ve had my eye on for almost two years but am also open to suggestions on that.