The best positions to get pregnant is where sperm is not likely to leak out are the best. Placing) a pillow under your hips during or after making love allows your cervix to rest in the semen for a short time. Allowing sperm time to travel to the cervix. Make sure the pillow isn’t too large and the sperm winds up behind your cervix. If you have a tilted or tipped uterus, making love from behind may allow the sperm an easier path to your cervix.