My dress is too small 😩

Jackie • Pregnant with our first! Career woman in the banking industry just trying to make sense of this new adventure we are on!
Hi everyone! My fiancé and I just found it we are expecting in March (yay!) but we are getting married on August 6th, next weekend, and I am SO BLOATED, that my dress is now too tight to the point where I can't take a deep breath (which I'll need to do a lot of to prevent me from throwing up). Does anyone have any suggestions on how to beat the bloat? Serious suggestions only as I am near the point of breaking down because the dress was the only thing I had control over and the only thing I could make perfect.  Thank you!