This is from a woman that had this problem...Not me...

"I have had that problem in the past. Here is something that helped me. My man is big and kind of long... I always felt because of that it seemed he would push more air in me. Those long and harder thrusts seemed to push air right up to my eyebrows. So what I learned to do was to hold onto(with pelvic muscles)his penis like it belonged to a million dollar gigolo...I would use these same muscles that I do for Kegels. I would hold on like I really had to fart in the normal fashion (you females know what I mean..talk about embarrassing). Not only does it help stop the air from coming in, but my Lover enjoys it tremendously and cums even harder. He says he feels it when I tighten my muscles. Then there is the extra benefit of doing my Kegels!!!

Sometimes a little air does get in, and wants to escape when he withdraws, to help that, we relax and enjoy being one (as they say), then pulls out slowly and it seems to work. My man could care less about the sounds...but he knows how embarrassed I would get, to the point of distraction for us both. He worked with me to solve the problem. HE's THE BEST."

I hope this helps....

Caroline

totally feel for you honey,
im in the same boat...

clinching your muscles does work but can get a bit tiring and uncomfortable as you seem to concentrate on it a bit to much.

something else that helps is actually trying to 'push out his penis' so to speak with your muscles-but very softly.this can stop any air from getting in and can also push any air out (quietly)

xoxox