Spotting

I had a miscarriage in September... I had spotting in July before my before was due. However now I am spotting almost every day during ovulation week. Has anyone had spotting and it be because of something? I want to start trying again.... but I hear ovulation spotting is normal... well is it normal to spot every day on and off, basically once a day.... it's been light pink to brown. I think I have endometriosis and was wondering if anyone has endometriosis and have spotting around ovulation as well.