10 PTS!!!! why is it that very fertile couples have a chance of only 15-30% chance of conceiving?

i mean if us fertile couples had sex on or right near the day of ovulation, shouldnt we fall pregnant then and there, because we're fertile? why is it that theres only that small chance of conception? is there something that couples are doing wrong? i just would like to know because i took an ';O'; test yesterday and had sex, and wondered if i'll be pregnant coz of it10 PTS!!!! why is it that very fertile couples have a chance of only 15-30% chance of conceiving?
What many people fail to take into account when reading these statistics is that your chance/percentage actually increases if: you are charting, temperature checking, having intercourse during the specific fertile days etc. Every couple is different so there is no percentage that can be prescribed to everyone without a doctor examining you and your partner- so this is just a general ball park.





Young, healthy couples who are having intercourse on the days that the woman is ovulating, have a good chance of conceiving. The reasons why these same couples may not conceive are abundant and can not always be explained but some are:





1. The man nor woman knows that the man has a low sperm count after all or he is temporarily decreasing his sperm count by: wearing underwear that is too constrictive, smoking marijuana or other activities/behaviors that lower sperm count.


2. The woman may not ovulate every single month or her body is fertile, but there are abnormalities that cause the egg to not implant which results in no missed period- even though fertilization did take place- it was just never detected.





Variations of these scenarios also can cause the percentage to lower.





Not everyone conceives on their first try. Matter of fact, many couples do not from something as simple as charting their ovulation incorrectly however, for a couple that is both fertile and sexually active as well as actively trying, it typically takes 6 months or less to conceive unless there is another underlying issue.





Best of luck.10 PTS!!!! why is it that very fertile couples have a chance of only 15-30% chance of conceiving?
i think it's just because the internal conditions have to be JUST right in order for it to happen. sometimes i think that all of the ovulation monitors and fertility charts tend to put too much pressure on the couple trying to conceive. my boyfriend and i weren't trying to conceive at all, and look here i am, almost 24wks pregnant. i think those that are trying to conceive should try to forget about all the planning (okay let's have sex on sunday at 5pm) because then you're too busy making it a chore to make sure that you're having fun and relaxing. and once they do that, next thing they know they'll prolly be pregnant.
That wont cause you to be pregnant. Only a mature egg and one sperm can.