Hi Paula,
I'm Jen, 43 now but was 41 when diagnosed. You are in limbo, that waiting between the lumpectomy and the next step is huge. You get your initial BC diagnosis and bang they are onto it with scans and lumpectomies and sometimes even chemo. Then there is that pause before the next step and by that time you've had a chance to stop and breathe and the BC reality check hits you in the face with force. It really is like a roller coaster with the dips and turns.
Fact is you have to give yourself time to process, you have to learn how to live with the shadow of cancer in your life, some people do this faster and easier than others. I took the attitude that I could curl up in the corner and cry or I could put on my big girl panties and plow through, either way I still had to travel the same path. Even with that attitude I lost it a couple of times along the way. My undoing was the genetic testing results, took that way harder than the BC, couldn't look at my daughters without crying for a couple of days, and my husband likes to remind me that even at my worst I said to him "I'll be fine, I just haven't quite finished feeling sorry for myself". You are allowed and entitled to adjust, just don't let yourself drown in it. Good luck with the Oncologist. Jen x