Hello, I am just starting progesterone pills 200mg gel caps. I started them about 10 days ago and about 3 or 4 days into it, I started with the break-through bleeding which I know is a side effect. One day I even had clots the size of a dime (which I also get during my period for the last few years). I had some mild cramping as well. I called the FFC dr and she told me these were common side effects and that she wanted me to continue taking the pills. Does anyone know how long these side effects last? If they don't go away, is there a smaller dose that I could take? What dose are you all taking? Thanks for all your help!!!!!!