I am 45 years old and have had exams and paps every year (all negative)I have endometriosis, and about 5 years ago had an ovary removed due to a cyst. For the last few years (on and off) I have had some irregular bleeding in between periods. For the past 2 or 3 months, my periods were totally normal. My last period was about 2 weeks ago, but I just started to experience a heavy pink watery discharge along with mild cramps. It has now been about 24 hours and it finally seems to be slowing down. I have experienced a similar discharge before but only for brief times and never this heavy. Everything I look at suggests cancer. I have an appointment set for next week but I just want to know if there are any other possible causes for this. The only other symptoms I am experiencing is an increase in appetite and mid to upper back pain (for the past several months), but i'm pretty sure that's just from a bad mattress). Please help. JRJ