During the first two weeks and beyond, there may be light spotting and brown discharge. Remember that your uterus is changing as a result of your drugs and your embryo. In general, only excessive bleeding, equivalent to or more than your period, should be cause for worry. If this happens, see your doctor immediately. The contents of this site are provided for informational purposes only and are not intended to replace or substitute for any medical advice or treatment. The information contained herein should not be used in place of consultation with an appropriate health care provider.