Mama, heart rate changes during pregnancy are so common, pero seryoso, please follow up with your OB bago mag-overthink, lalo na may symptoms ka pa last week. Siya ang makakacheck properly kung normal lang or may kailangan i-monitor. The body aches could be pregnancy stuff, pero your doctor needs to see you para sure, especially since may follow-up ultrasound ka na scheduled na anyway! Kahit nawala na symptoms mo, don't skip that appointment, importante talaga. A few of us moms always remind each other na walang tanong na masyadong katwaan pang-OB visit; yan talaga ang safest way. Sending love, ija, you're doing great!