I think carolinapam gave you great advice. Your breast surgeon can recommend a good general surgeon.
We ALL have to be in charge of our physical well being. I'm so glad you did have the courage to call the surgeon about the lump.
You already know that the waiting part can be brutal. It sure was for me. Hopefully, you can line up a surgeon asap and get the lump removed and that will answer some questions.
Prayers for peace. You can do this!