White, pressed, oval with 770 stamped into it

white, rectangular (rounded sides) imprint 770, probably generic - Drugs.com (http://www.drugs.com/forum/pill-identification/white-rectangular-rounded-sides-imprint-770-probably-generic-42848.html)

Could it be acetaminophen?

Acetaminophen... that's exactly what the white, rect, 770 pill was, thanks so much! Relief off a worried Mother's mind! :D