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" Question I am female, age 23. I enjoy a healthy sex life. We are comfortable with each other, and do not mind experimenting in bed including trying out several different positions.  Although I enjoy the position often referred to as &amp;amp;#8216;doggie style&amp;amp;#8217;, occassionally I encounter some loud noise, due to trapped gas. I have never experienced air in my vagina before, and wondered if this was a common occurrence with this position.  It bothers me, and I am worried that future partners will not be so OK with it. As he is my first sexual partner, I have nothing to compare. I would be very grateful if you could tell me whether this is normal? Can this be avoided or is it just me or him or both or just physics?    Answer It is completely normal for air sometimes to find its way into the vagina during lovemaking &amp;amp;#8211; and many couples will have heard the sound which it occasionally makes, usually after the male partner withdraws.  It&amp;amp;#8217;s simply a question of the penis acting as a &amp;amp;#8216;pump&amp;amp;#8217; which drives air in front of it. The rear-entry position does make this more likely as the angle of penetration relative to the vagina is different to the angle achieved in the &amp;amp;#8216;missionary&amp;amp;#8217; position. There isn&amp;#039;t really any way round it. It isn&amp;#039;t due to muscular laxity or too much or too little lubrication &amp;amp;#8211; it is as you thought, just down to fluid mechanics!  Yours sincerely Dr David Delvin, GP   Other Qs &amp;amp; As A problem with semen? As a man, I am not used to receiving pleasure Can a woman still be sore &amp;amp;#8211; three days after sex? Can olive oil be used as a lubricant? Can one alter the taste of semen?  Condoms are too loose Could I get my girlfriend pregnant &amp;amp;#8211; even though she&amp;amp;#8217;s a virgin? Do I have to keep to the missionary position for life? Dominated and raped  Female ejaculation He&amp;amp;#8217;s afraid of sex He&amp;amp;#8217;s into animal pornography He likes &amp;amp;#8216;hard sex&amp;amp;#8217; but I don&amp;amp;#8217;t  He is no longer physically attracted to me He puts his finger into my anus He ripped his foreskin He thinks my vagina is &amp;amp;#8216;too big&amp;amp;#8217; for him He was abused as a child and it&amp;amp;#8217;s affecting our sex life How long can semen survive outside the body? I become sore after my fianc\u00E9 ejaculates inside me I burn after sex I can&amp;#039;t have sex with my husband I dislike sex &amp;amp;#8211; and my body I don&amp;#039;t like using a condom I leak after making love I want sex with my man &amp;amp;#8211; but my body won&amp;amp;#8217;t let me I want to have sex but I was abused as I child I was abused as a child and am now unable to have sex Is it normal for him to drink breast milk? Is it normal to leak after sex? Is my smell normal? Is pain during intercourse serious? My boyfriend won&amp;amp;#8217;t put his tongue in my mouth My girlfriend needs alcohol to enjoy sex My girlfriend wants me to pass urine My partner was raped My husband looks at women in pornographic magazines My wife won&amp;#039;t give me hand relief My wife won&amp;#039;t wear fetish clothes No luck getting pregnant Penetration does not give my girl enough stimulation Problems achieving penetration Restoration of the hymen Sex in the seventies Sex in old age &amp;amp;#8211; is it healthy? Sex difficulties Sex gives her an infection Sex is painful Sex on the Pill Sex with women is overrated Sexual health check-up She only wants sex when she is drunk She is self-conscious about her small breasts She wants me to urinate inside her Since giving birth, I hate sex  The &amp;amp;#8216;69&amp;amp;#8217; position The dangers of foreplay Three years without sex Tightening up your vaginal muscles Trapped by sex We can&amp;#039;t have sex without using a lubricant Will I always be unfaithful? What&amp;#039;s a sexual health check-up? Why is sex difficult? Will drinking juice make a man&amp;#039;s sperm taste sweeter? Will I never be able to have sex with my boyfriend? Will we have problems conceiving?   Last updated 01.06.2006 "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.netdoctor.co.uk/ask-the-expert/sexual-health/a1443/trapped-air-when-having-sex/>