Got an interesting question. I have read that vagina PH is acidic and can kill sperm. But I have read that cervical mucus makes it basic during ovulation. My question is that is the whole vagina turned basic because of the cervical mucus or just the upper walls of the vagina. Relating to this is that does the chance of pregnancy decrease depending on where the sperm is. For example is there a noticeable difference in conception chances if the sperm is at the vaginal opening compared to being ejaculated at the upper part of the vagina