For a 28 day average cycle, a woman ovulates 14 days BEFORE their period. It is suggested to have sex every other day starting a few days before you think you will ovulate to a few days after.
when u ovulate. Most women fourteen days counting the day u start as number one
also sperm can live in the body for a few days so lets say u have sex on day twelve, u can still be fertilized on day fourteen or fifteen. Keep in mind not to stress bc if u really wanna be preg u can have symptoms and even miss periods. The average couple takes up to a year to get pregnant. It took me six months.
Click on this link
http://www.mymonthlycycles.com/ovulation-calculator.jsp
(i have typed below incase link dont work)
www.mymonthlycycles.com/ovulation-calculatior.jsp
Its fantastic.
Type in your last period and how many days until your next one is expected and it will tell you your fertile period.
It will ask your luteal phase (thats how many days after you ovulate until your period starts)
That is quite hard to work out, so just put in 14 days and allow an extra 2 days either side of the websites predicted ovulation day for baby making
If your roughly the 20th every month its roughly a 31 day cycle.
Also look out for changes in your cervical mucus, When you are fertile it will increase in volume, be stretchy, slippery and wet. Like egg whites.
Have sex every other day while you see this mucus.
The last day you have this type of mucus will either be the day you ovulate or the day before you ovulate, so continue to make love every other day right up until a few days before you expected period incase you ovulate late one month.
Good Luck.
Both times we have successfully conceived we have started having sex on day 9 and every other day until we got a positive ovulation test. then we would have sex every day for 4 or 5 days. So I guess if you arent using ovulation tests you would need to estimate and have more sex.
I would have sex every other day from 27th of the month and increase to every day from the 1st of the month for 7 days. Or get some ovulation tests so you can be more accurate. :)
The day your cervical mucus looks like egg whites - clear and very stretchy
Ideally be better if you use ovulation tests,and even charting to pin point ovulation exactly.cm the old ewcm is a good sign,but not all women produce this.so isnt somthing to rely on.best of luck.