The chances of pregnancy
depend upon the time when you missed the tablets. During first week of medication, the chances are more and emergency contraception
is indicated. During week 2, the medication can be continued. During week 3, the medication is started immediately after completion of the cycle without waiting for the usual one week and if withdrawal does not occur after the second cycle then pregnancy test is performed. Your spotting could be a breakthrough bleeding
due to irregular hormonal
levels in the body as well as the stress
that you are going through right now. I advice you to see your doctor for a check up and further management. Good luck.