So I have a theory, though I can't find much research online to back it up. Only very vague articles. Can having too acidic CM actually result in infertility? I've always had very acidic cm (vinegary smell) and just recently thought that maybe this is my underlying problem? That the sperm never lives long enough to reach the egg because the pH of my vagina kills them before they do? Have any of you had this as your main problem? I'm going to use pre-seed every day this month to try and "replace" my cm because pre seed is the perfect pH for swimmers. Has anyone ever tried out this theory? I'm interested to know!!