My last pap had endrometrial cells in it. my doctor has scheduled an endometrial biopsy from the uterus. i had just started my period at the time of the pap - could this produce the e-cells? what does the presence of the e-cells possibly indicate? what

Likely from period: Yes endometrial cells on a pap smear can come from being on your period. That being said it is not considered normal to have these cells present. When found on a pap especially in women above 35 or with certain risk factors the appropriate next step is an endometrial biopsy to rule out cancer or precancerous cellular overgrowth in the endometrial lining.