Neck lump

just looking for some advice really. I have a lump in my right Brest which I had scanned last year. Nothing showed on US so was told its a cyst. About a month or so ago I started getting pain in my breast and noticed the lump had grown. Went to GP who said I also have a lump in my other breast. I am booked in for another US next Wednesday.
But about the same time as the breast pain came I found a pea sized lump in the side of my neck. It’s slightly tender to the touch but other than that it’s fine. Could this be related to the breast lump? I forgot to mention it to my GP so will mention it when I go for my scan. Has anyone else had this?

Is there no one out there that has had this? I presume that it has nothing to do with the lump in my breast but was hoping someone could offer some advice?

Thank you Jo. I’m probably just reading into it too much x