Whta are the best sexual positions that you will help you get pregnant?

Any position usually: In general, it doesn't make a difference. In some cases, if a woman's cervix is in an extreme position (say pointing "up" towards her pubic bone, rather than down toward her rectum, the more typical orientation), then a "doggy style" position after ejaculation may be better than missionary. Also, "cowgirl" positions may not be ideal, as sperm/semen needs to "pool" near the cervix for best chance.