Do not worry about keeping pH low if you are having trouble getting pg and have very little CM. You may NEED to have slightly higher pH just to ensure that enough sperm survive to make it to the egg! The swimmers have to survive the VJ and then make it all the way up to the egg without much CM to help, dying all along the way, so you need more swimmers from the start so something is left to fertilize the egg!

Just because your pH is momentarily higher in the VJ from DTD, does NOT mean that your pH is high where the egg is fertilized. if you have very little CM, your pH is prob. low up inside too!