Yeast infection while pregnant

For anyone who has had a yeast infection while pregnant or in general, after you take the medicine the doc prescribed to you what happens? 
Background: I've never had a yeast infection and didn't have any signs or symptoms of one but during my 37 week check on Monday my ob said I have started to develope one and wrote a prescription for 1 pill of diflucan.. I took the pill Monday after my appointment And today I've been getting a weird creamy white discharge, it has no odor but it's a lot.. Is this normal?