Ob-Gyn questions? Ask a gynecologist online.
Hello, I'm Dr Manos MD, board certified Obgyn. You took plan B the first time and got your period December 21st. Then plan B was taken beginning early January. No period since. The problem is that plan B is a synthetic progesterone (progestin) and is equivalent to the progestin in four bcp's. It has thrown your cycle off. Provera may not bring on a period. Best to wait until the end of February giving your period a chance on its own.
I didn't get a response back about plan B and how it frequently throws off a woman's cycle. What are you thinking at this point.