Hi Im 4 Weeks Pregnant And I've Taken 3 Doses

Hi im 4 weeks pregnant and I've taken 3 doses of Msi 200 orally within 3 hour intervals starting from 9 am and I've only had a light discharge by nightfall I have 2 other tablet I'm suppose to insert vaginally if I don't see anything heavier should I take them or how long is it before you usually see blood