Iv had this raised mole for about 3 weeks. last night itit still hadnt changed. however when i woke up this morning i realized that it had darkened alot , gotten harder and had seemed bigger. could this be the result of me rubbing the mole alot?

Overnight change is most likely related to something like that but the only way to tell whether it’s concerning or not is to have it looked at and a biopsy may be done/recommended which is a small office procedure for something like that

Rapid change is possibly do to bleeding into mole from trauma. If it does not resolve in a week back to original appearance, see a dermatologist to rule out melanoma. These require definitive treatment.