Cytotec

Kt
It's been more than 24 hours and nothing is happening. No cramp no bleeding! Nothing!!! I was bleeding before I take this med and soon as I took it the bleeding stopped. I took  cytotec 200m each 4 tablets by mouth 4 times for 1 day. So I pretty much took 16 of them within 24 hours and nothing has happened. What is going on?!