Red dots on breast

Looking for peace of mind I guess or whether to go back to the doctors. 
I noticed last year I had a red dot on my left breast which then developed into a small lump. I went to the nurse for a check up after having my little boy and was told it was normal and nothing to worry about. I’ve now got another dot that’s developed to a lump and two more dots started and watching to see if they go to a lump also. 
I’ve recently found out both grandmothers had breast cancer and one died from this. The one that is still alive, her sister now has breast cancer and has had to have the breast removed. 
Would you go back to the doctors since the breast had changed and the knowledge of family history?
Thanks for any help or advice