First of all Congratulations on the new baby! I had a similar situation myself, only it was my first child. I knew I had to be the "perfect mother" and take care of everything! Unfortunately it caused my incision to take forever to heal and when it did, the scar was wider and thicker than it should have been. Yes, you needed to walk alot to keep from getting a blood clot, and yes, as a nurse, it's easier after any surgery to get back to normal if you are up moving. However, cleaning house and working the yard are not things you should be doing! Even 2 months later! No sweeping, mopping, mowing, raking, anything that is going to work your abdominals until you are completely healed. I waited 8 weeks to do any of the above, and your doctor/nurse should have recommended the same. And here's a little secret.....the yard and the house will still be there when you are well and able to tackle them! They won't run away, I promise, I tried really hard to make mine leave! You and your kiddos need you well and spending time with them, not going nuts to get things "normal."
To the pains you are still feeling, it's related to scar tissue. My oldest is 11, youngest is 3 and I had 3 C-sections, I still have sharp pains when I lift my treadmill track and the scar tissues pull and tear on the inside. It's a normal occurance but you need to make sure you aren't running fever, increased redness to the site, or it opening back up. these are signs of infection. The numbness will not go away! I am still numb and my husband didn't believe me so he bit me and drew blood! LOL! It's the little pouch above the incision, right? Now, the period, unless you are breast feeding, you should start soon. I actually bled for several days after and since I couldn't breast feed about 3 weeks later I started.
Best of luck and if you still have concerns or just don't "feel right." Go see your doctor and if you have to keep pressing, please do! so many times we think Doctors know it all, they know alot but they are also very, very busy and miss things sometimes. They're only human. Hope this helps, take care and again congratulations!