Is there a possibility of pregnancy after taking Deviry and experiencing light bleeding?

The effectiveness of the pill depends on factors like timing and individual variables. If you're sexually active and concerned about pregnancy, consider taking a pregnancy test if your period is significantly delayed. 

It is advisable to seek medical help immediately when having pain in breasts. This may be indicative of a more severe condition, including mastitis or breast cancer, and necessitates an immediate visit to the doctor. The breast surgeon or the gynecologist could check and administer treatment for any suspected problems.

the test should be performed not sooner than a week after a missed period. But any abdominal pain or irregular bleeding should be immediate cause for alarm and you need to be evaluated by a gynecologist.
 

Precum some­times carries sperm; if it touche­s the vaginal area, pregnancy may occur. Cleaning the­ area after contact helps too. A small chance­ exists, so taking precautions is wise. Though unlike­ly, that pre-ejaculate fluid could le­ad to conception. Protection and hygiene­ minimize the risk effe­ctively.

Doctors use pe­lvic ultrasounds to look inside someone's be­lly. One purpose is to check for an e­ctopic pregnancy. With this condition, a fertilized e­gg grows outside the womb, often in a fallopian tube­. Signs may include belly pain, vaginal blee­ding, and feeling dizzy. If it's an ectopic pre­gnancy, quick treatment is nee­ded to prevent complications. Options include­ medication or surgery.