Hard lump in breast

Hi, so last year I found a lump in my breast and I went to the doctor! She sent me for an ultrasound but the ultrasound tech was unable to find the lump so they just concluded that it dissolved on its own and that it was nothing to worry about.

Well the other day I was feeling my breast and I found a similar lump, except the difference is this one does not move as much as the last one and if fairly hard to touch. When I touch the rest of my breast it almost feels like half looked instant noodles (the ones that come in a big block all stuck together) & there is a chunk that moves as a whole underneath my skin. When I compare the texture to my right breast it doesn’t feel similar

I have a doctors appointment tomorrow but I’m wondering if it’s worth going, or if I am just over thinking it? I had my boyfriend feel and he says it definitely feels like a lump! My mom also felt but she says it’s hard to tell. She said she’s not a doctor so she doesn’t know what feels normal or not.

I’m just a little anxious as it’s obviously isn’t comforting finding lumpy tissue in your body.