Prometrium should only be used
in the first trimester, if your levels are low. For many years women have
used progesterone
in the first trimester to sustain their pregnancy. For myself mine was at a 15, they like them to be above 20. At 45, I believe that is a very good range for pregnancy and most likely do not need them. Do not take it throughout your entire pregnancy, at that point the risks are unknown.