Pregnant but have a wedding dress

Hi everyone!

So I've been thinking a lot my wedding dress and grandma. I have a wedding dress that I purchased that year and still havent really did any wedding planning. Dec last year I had a MC and shortly after that we found out my grandma is diagnosed with cancer now about a week ago I found out I'm expecting! I want to go ahead and jump over the broom but im worried about the wedding dress not fitting me being prego and all. Should I wait to do the wedding after the baby or try to fit in a wedding before the bump shows that way my grandma can at least see me in my wedding dress?