Oo, maraming moms ang nakakaramdam nito after normal delivery, kaya hindi ka nag-iisa! 11 days pa lang kasi, and your body is still recovering from birth, ang lower back pain at pelvic pain ay super normal, especially pag matagal kang umupo or tumitigil. A few of us tried gentle stretches, proper posture pag umuupo, and parang nag-improve rin after a couple more weeks, pero important talaga na i-check mo ito sa OB mo para masiguro na walang complications or pelvic floor issues na kailangan ng proper care. In the meantime, take it easy on movement and don't force yourself to do too much, your body just did something incredible and needs time to heal!