HELP! BROWN DISCHARGE/BLOOD?

Ashlee
this is my 4th pregnancy my closest child is going to be 6 years old. I lost my 3rd pregnancy to ectopic in august, so freaking out over everything. I just went to the bathroom and there was a little brown stuff when I wiped. I am cramping very slightly. Is my uterus growing. I seriously can't remember I think as long as it's brown it's old and ok??