Aayyy, mama, please go to your OB or the nearest hospital right now, this needs a proper check-up in person, hindi lang online advice ang kailangan mo dito. I know it's scary, especially for your first baby, pero kailangan mo ng ultrasound with your doctor para makita nang malinaw kung ano talaga ang nangyayari. A few of us moms have been through worries like this, and sometimes there's a valid explanation, but you really need your OB to explain it to you properly and make sure you're okay. Go na, mama. You deserve peace of mind, at you and baby need the best care right now. Sending you strength.