I broke my glasses a few weeks ago and needed them replaced. Went to the optometrist and had a eye test as I was due anyway. As I still had my glasses, they were able to see my old prescription. Thankfully the prescription has not changed though my optic nerves are swollen. This could be due to pregnancy or genetics so need to get them checked out again after Speedbump is born.

IMO go after bubs is born as it will give you a true indiction of what your prescription should be. The optometrist said she would not have drawn up this prescription if she did not know what my previous one was due to possible changes with pregnancy.