Ay mama, totally get your worry, kahit may mga babies na na-deliver na, ganito pa rin ang anxiety! A few of my mum friends had similar experiences where old stitches seemed to loosen or feel weird after a big delivery, and honestly ang best thing talaga is to message or call your OB about what you felt, especially since nakapa mo yung parang thread, better safe than sorry kaya dapat i-check lang niya para ma-ease your mind. In the meantime, try to relax when dumumi (anxiety makes it tighter!), use warm water or a bidet if you have, and avoid straining, pero seriously, don't hesitate to reach out to your doctor, lalo na fresh pa lang ang delivery mo from Sept 9. You're not being paranoid, ito normal na concern after birth!