Chanel,
Nadi is right, Ive had two lumpectomies in 5yrs and rads and chemo. The lumpectomies do take quite a long time to settle down and heal. I remember getting nerve pangs and twinges a year on, but honestly nothing to be worried about. I think the key is to listen to your body, don't go rushing back to work if you don't have to, give yourself time heal a little and to deal with everything going on. I too work in a challening environment with Autistic children and I went back 6 weeks post chemo 3 days a week. Im now 9 months on, but struggling even with 3 days. So hang in there, its a slow healing process but nothing to be alarmed about, just be kind to you.
Hugs
Melinda xo