Hi mama! Spotting is pretty normal when you first start pills, nangyari din sa amin, a few of us mums got that sa first weeks kaya don't worry too much about that part. But honestly, para sa tanong mo about protection and kung pwede ka pang mabuntis after unprotected intercourse, mas better kung i-check mo agad with your OB para sure, kasi bawat situation different at sila lang ang makakasagot ng tama based sa timing at how your pills are working, iba-iba kasi ang body ng bawat mama. Praying all is well with you!