The closest you get to aborting at home is by having a medical abortion where you see the doctor and get the pills but the actual abortion take place at home. It's not safe to experimenting at home with herbs etc. You have to see a doctor.
Even if you don't keep the baby you are still a mother at heart and knows it's out there and you might want to keep it but circumstances makes it impossible. You have your choice if you want a child...
Self-induced abortions are very dangerous and can lead to sterility, disease, hemoraghing, damage to organs, or death. Go to a paternity clinic to find out safer options.
You cannot abort a baby without seeing a doctor. It is not only illegal but also extremely dangerous. Three months is already too late to just take medication.
Go to see someone NOW, you need...
No you can not. You are risking your life because your uterus could rupture. It is also illegal to attempt abortion by yourself without a doctors supervision.