It's beautiful, It's perfect...but I can't breathe!!!!

OK, so last Friday my mom and I traveled up to Amarillo for the "umpteenth" time to see if my dress fit and to take it with us if it did. I was very excited to see it again and a little anxious as well. We got to David's Bridal around 3:30pm and were told to go to the back where alterations were. They told me to go into the first dressing room put on my shoes, slip, bra etc. and then they would come in to help me get into my dress. I did and the lady was helping me into my dress when I hear her say, "Uh oh". It was a little tight she said. A Little????????? I would say very very tight. Where the dress closes in the back is where the problem is. I took a huge deep breath in and she zipped me up. Ok I'm freaking out at this point. Well, it must have been all over my face because when I came out of the dressing room the other alterations lady who has been helping us through this whole process was there to tell me everything was fine and I looked beautiful. I'm like listen lady I might look beautiful, but if I can't breathe then how do you expect me to wear this thing? She said it was too high on my back and pulled it down a bit. It felt better but I was still not convinced it fit. The ladies did my bustle, which by the way is going to take an army to do at my wedding, and then they said OK your done. I felt weird. I felt like I wasn't given enough time to inspect the dress. We were in the store only for about 30 minutes and the whole way home I wished I had more time to examine everything. I was planning on trying on my complete look, but they really didn't give us that opportunity. It was really weird. When we got back to Lubbock and to my mom's house my mom and I decided to try on everything again. It was really difficult to get into and I still couldn't get the dress zipped up all the way. What a nightmare!!! At first we thought they forgot to put in the eye for the hook and eye, but I found that Sunday. Anyway, it will all work out and I will be a beautiful bride. I fluctuate in weight during a certain time of the month and retain a lot of water so I'm hoping that's all it was. I'm going to try it on again tonight maybe to see if I can breathe. Wish me luck. If not I guess it's back to the gym for me :(