I had an issue with odor a few years ago and found out it was linked to my hormone imbalance you might want to talk to a doctor about it.
First off, don't cleanse within the vagina, only the exterior vaginal area. The reason being, is douching or other method of vaginal cleaning can change the pH balance of the vagina and make it a hostile environment for sperm to thrive. Beleive it or not, our vagina cleans itself.
Switching positions or certain sexual positions can force air into the vagina, causing uncomfortable pressure. Squatting or similar leg/body positions can help force the air back out, but this shouldn't cause much of an alarm - it happens. Good luck TTC!