What Are The Uses And Side Effects Of Misoprostol?

Good evening doctor..I'm 31 years old,5'ft.in height,have a 4 child already.I had already an attempt to induce self abortion due that i had alrady a high risk pregnancy on my 4th baby beacause of my hypertension and stress.I had taken a misoprostol once and it did not suceed for bleeding.I have inserted 3 and have taken 1 bucally.After that,i only suffered a sudden pain but no bleeding happend.What will i do for that doc?please help me.Thanks.