Mama, please see your OB as soon as possible, especially since ito ay naiiba compared sa first pregnancy mo, at may pain sa singit at side. Hindi ito normal na mag-worry ika, kaya better na checked agad. Every pregnancy is different talaga, pero ang changes in heartbeat strength at localized pain ay kailangan i-assess ng doctor mismo para peace of mind mo. Isang mami friend ko once had similar concerns at nag-alala din sya, pero good thing nag-checkup kaagad. Definitely don't wait, alam mo yan, better safe than sorry with pregnancy. Ipagamot mo na yan para makatulog ka ng mahimbing, ha?