Oo, normal talaga yan, maraming mum friends ko na nag-lyndavel na nawala ang period nila after the second dose or even earlier, kaya wag ka mag-alala! It's one of the common side effects ng injectables dahil sa hormones, at pwede ring completely stop or maging irregular for a few months. But since every body is different, best to mention it sa OB mo on your next visit para ma-confirm na everything's good, at para alam mo din kung ano pa dapat i-expect sa coming months.