Exercising 3 Weeks Postpartum??

I had my daughter October 29th naturally and didn't tear. i've have a pretty flawless recovery(so grateful) and i was wondering if anyone else has started exercising? i don't want to do anything too strenuous, just some squats and ab exercises to tone up a little bit. my body feels good and it's totally killing me waiting to get my pre-baby body back since i feel so recovered ):