I'm going to sound like I'm saying yes and no.
I'm with the ppl saying to just keep trying bc you never know how long it may take.
On the other hand, the first 4 months of both of my pregnancies I felt so sick. I could barely suffer through sitting at work all day, nevermind walk all over WDW. Not everyone gets sick like that (or has significant food aversions and constantly feels exhausted) and I certainly didn't expect it, but it is not how I'd want to spend a WDW vacation.
In the end, the decision is yours obviously.