Terconazole
"Came down with my first YI at 26 weeks pregnant. Doctor prescribed me terconazole 0.4% cream for 7 days. Just took 2nd treatment and so far so good. Didn't have itching or burning before the cream so can't speak to it alleviating that, but it does seem to be flushing out the infection. I did get nauseous for a few hours after I used for the first night, but it's gone away now."