Hormonal changes during pregnancy can create some vision issues as well. Did you know about them?
http://www.dnaindia.com/health/report-dna-expert-speak-how-vision-changes-in-pregnant-women-2282358
The advice is to see an opthamologist one month after the baby is born if vision does not revert back to the state before pregnancy.
In Canada, that would mean an optometrist referral to see the eye specialist.