Any pregnant women or mothers who have any advice about this?

We have our annual fireman's ball this Saturday night. I'm 29 weeks pregnant and I have a really pretty knee length black dress that I am wearing and I am wondering about my choice of shoes. I really want to wear my heels as I always wear flat shoes or comfy shoes. They are not too high and I usually end up taking them off about halfway through the night. I can't do a lot of fast pace dancing and I will be sitting for a portion of the evening for dinner and drinks. I really want to wear my heels and not flip flops or flats...I think it looks silly. Any thoughts or advice about wearing heels for one night?