Is Deviry Harmful To Take During Pregnancy?

hi I missed my periods in this month. Its due by around 20 days. I also experienced very less spotting for 2-3 days and then stopped. I feel that it might be implantation bleeding. When i tested for pregnancy, i got really faint pregnancy indication line. when asked doctor, she prescribed me Deviry 10mg. is that harmful in case i am pregnant? Does this tablet has any side effects?