Scared

Hi everyone! I need some advice , since before Xmas iv been suffering with a full feeling in my left arm, it feels like I have a dead arm if that makes sense! Then I get a pain into my left armpit and a dull ache into my back, the dull ache is with me constantly, I have been to gp who found a small lump in armpit but now that has gone away, I have had a full blood count and all has came back normal. I was sent to breast clinic yesterday as there is a family history of bc. But I got a very dismissive consultant no lump no cancer so he wouldn’t even do the mammogram, so now I don’t know what my next step is can someone please help!