Ok so i may be over worried. But today a coworker let me use some peppermint essential oil, without thinking about the baby i put some on my neck because i had a headache. Then my manger told me not to use them again because it can relax the muscles causing a miscarriage. She said since this was my first time and that i didnt use too much i should be fine. Im only 8 week and my 1st dr appointment tomorrow. But im still a nervous reck because of my last miscarriage.