Sudden pain down my navel

Hi Mommies, 16 weeks and 2 days preggy now. May nakaramdam ba sainyo na parang sudden pain sa baba ng pusod for like 5 seconds? It happened to me just now. While i was about to laugh. Normal lang kaya ito? May subchorionoc hemmorhage rin kasi ako which makes me more worried. Although my ongoing oral progestorone and vitamins din.