Thanks for using the forum.
Conception can occur with any sexual position. When trying to conceive, the when is more important than the how.
Conception occurs when the sperm and the ovum(egg) meet 12-24 hours after ovulation. Ovulation usually occurs mid way through a woman's cycle, or 13-16 days after the start of your last menstrual period. Sperm can survive up to 3 days after ejaculation. Using this information, conception is most likely to occur with sexual intercourse on days 11-17.
I hope this helps.
Cathy
I believe doggy-style is better