I have endometriosis and I have already had four children now I believe I may be pregnant again but I am not to certain. My youngest child is five but I have been spotting light pink for two days, then on my second day had some brown discharge. I am not due for my period for over a week, my heart has been going crazy. I have ariythmia and have been getting a lot of panic attacks within the last week and I believe it may be associated with the possibility of me being pregnant.