Weird Bumps in my Sculpt I can't smooth down?

Hello!

I’m still super new to sculpting, so this might be an easy fix, I don’t know, I might be really stupid here. xD I tried google and the other topics, but couldn’t find anything.

I keep getting these weird, bumps. I did notice them showing up symmetrical (I have symmetry on and work with it a lot), but even when I turn it off, and try to smooth it down it doesn’t work. That bump stays, same size and everything. In Edit mode I can see even more.

Thank you.

Realised this probably isn’t the best picture of it.