It seems as though the Divigel is running low prematurely and this could be due to the fact that you are very active, metabolize hormones fast, perhaps fail to apply gel correctly, etc. Best to talk to your doctor about this. I just started Estrogel myself but I am also on injections at the moment. I apply the gel twice daily, like you and I may have experienced this once, on a day when I was particularly active but it may also have been due to something else, who knows?