My bbt was elevated for almost a week when it suddenly dropped but I haven't started my period and now am late Could I still be pregnant or is it too late since the drop in temperature?
It is possible that you are pregnant. A decrease in BBT could
indicated a decrease in progesterone. You need to have enough
progesterone in your system to sustain a pregnancy, so if you think
you are pregnant and your BBT has dropped, you should see a doctor
asap (you can increase your progesterone level with pills or
injections, but you may miscarry if your temperature remains too
low).