Lumps in boobs😭help plz

Hard lumps in both boobs? Almost feels like rope and my boobs feel extremely firm and tender. They also have some swelling. I’m not sure if I’m pregnant, but this has been going on for 3 weeks... (I’ve never been pregnant before.) so possible pregnancy or something else to worry about? (I realize I can’t be diagnosed but am curious if anyone else has been experiencing anything similar. I’ve NEVER had this happen previous to any of my periods or ovulation.