Pwede na agad after giving birth, honestly! A few of us tried na mag-trim ng nails and hair within the first week pa lang kasi kailangan talaga, and walang problema, just make sure you're feeling physically okay and hindi ka pa sobrang weak pa. For waxing, I'd wait a bit longer, maybe 2-3 weeks, especially if you had a normal delivery, kasi sensitive pa ang body mo, but again depende sa how you're healing, better to ask your OB kung good na ba for you specifically!