I have read that progesterone cream should be put on different parts of the body every day because it has glycerin and glycerin doesn't penetrate or there is some problem with that. Well I use progesterone cream from Nature Sunshine and it has glycerin. Do you think I should change to a cream that doesn't have glycerin on it? Does your cream have glycerin? Is your cream better to use if I use it long term? I also read that you shouldn't use progesterone cream for a long time because then it will accumulate in your body and not work later. How true is this according to your expertise. Thank you for your support.