Hello dear
Understand your concern.
Better to use abortion pill under the supervison of gynecologist to prevent complication of it.
It can cause pain for 5-7 days after taking pill, but it is tolerable.
It is moderate  to less 
severe pain.
Pain severity may be varies from person to person. But it is tolerable by bed rest and 
analgesic tablet.
Following are side effects:
nausea, vomiting, other gastrointestinal disturbances, headache
uncontrolled bleeding, 
incomplete abortion, mood swings, tiredness.
Take following advice after taking abortion pills:
Follow up USG to confirm the incomplete abortion
Proper bed rest with leg rise
Tablet 
meftal spas Tablet globac Z
Healthy diet with adequate vitamin and mineral supplemets
Drink lots of drinks
Relaxation and stretching exercise
Take fruits like papaya, orange and pineapple
Maintain pelvic hygiene
Wear pure cotton loose inner wear
Use safer sex practice to avoid unwanted pregnancies.
Also check for foul smelling 
vaginal discharge for infection.
Hope this may help you
Best regards
Dr. Sagar