Hello. Am Trying To Induce A Miscarriage Am 8 Weeks

hello.
am trying to induce a miscarriage am 8 weeks pregnant.i've taking over dose of vitamin C now am taking a high dose of dong quai (it's 2 days now)am taking 3 pills of 530mg of dong quai in 4 hours.am experiencing back pain ,stomach pain and brown discharge in my vagina.but still no bleeding yet.do you have an idea if this is gonna work.please help