Menstrual Problem

My age is 23 and my problem is, I get some air or gas from my uterus during my 3rd or 4th day of my periods .My cylce was normal .Sometimes i feel the same when i have sex.None have this problem when i asked my friends.Is it normal and what is the problem i have ? Will i get infertility in future? pls help me.
Thanks

It has nothing to do with fertility. It is a normal experience that happens most often during sex not to everybody but it did happen a couple of times to me.

Vaginal farts occur when air gets into your vagina usually during arousal, penetration but you may experience it during exercise as well. It happens because vagina lengthens and uterus moves and more space is created for air. The fart occurs when both vagina and the uterus return to their normal initial positions. Try to use some lubricants during sexual activities in order to prevent this from happening.

If it happens too often during sex and you don’t feel comfortable enough with your partner to ignore it, then you should change positions at least for some time.