How long will it take before Misoprostol will have effect and for how long will symptoms (bellyache, nausea, blood loss etc.) last?


In most cases Misoprostol will have an effect within 4 hours and you will start getting cramps and bleeding. The symptoms (pain, blood loss, nausea, diarroea, etc.) can last for up to 12 hours but should diminish when the abortion is complete.
(see for complete instructions "How can I do an abortion"

If you have prolonged bleeding, too much bleeding (much more than a regular menstrual period), pain in your belly that does not go away after a few days of taking the Misoprostol, pain that is unbearable, fever, continued bleeding after three weeks, or pain when pushing on your belly, you may have an incomplete abortion. You must go to a hospital or a doctor to complete the abortion if you have any of these symptoms. This is absolutely necessary because the tissue and blood that remains in the body can cause heavy bleeding or an infection. The treatment of an incomplete abortion is legal everywhere.
In countries where women can be prosecuted for having an abortion, it is not necessary to tell the medical staff that you tried to induce an abortion; you can say that you had a spontaneous miscarriage. There are no tests that can show that a woman has done a medical abortion. It is extremely important to treat an incomplete abortion. The treatment for incomplete abortion is called a vacuum aspiration, or “curettage." Any clinic that can deal with complications of miscarriage can also help women with incomplete abortions, because the symptoms are the same.