Heartbeat ni baby

Im 26 days and 2 days preggy, i had my pre natal consult last saturday, ang sabi ni doc ung heartbeat daw po ng baby ko may tym na bglang bmagal... in two weeeks babalik po ako pra icheck nya ulit. If the same thing happens again, baka mgpa 2d echo fetal scan daw po ako... may naka experience na rin po ba sainyo ng gnong case? nraramdman ko naman na active ang baby ko, pero hnd ko maiwasan mag worry...