Two weeks after taking flagyl for trich and my discharge still smells - also my period is 4 days late - will the bacteria affect a pregnancy test?

Trichomonas treated?: Two major factors need to be addressed: 1) if you took all the medicine (metronidazole) as prescribed, and by the way pills are better than cream 2) did you get re-infected by your partner who may not have been treated? Although possible, resistance is rare (5 to 15% at most). Best to go back to your gyn and ask for help. The infection itself won't affect pregnancy test results.