Feeling terrible 1 month after concussion, even though I felt great the week after it happened

About a month ago I got a concussion after a curtain rod fell on my head. The initial incident did not seem that dramatic. The only reason I went to the doctor to check was because I felt really dizzy after the incident. The doctor said it was a concussion. However, it still did not seem so serious to me as the doctor even told me I could go to work the following day if I felt fine.

The day after the concussion, the only symptom i rememeber is feeling slightly dizzy. There was no headache or nausea. 3 days after I went to work and felt okay. 4 days after I tried working out, but that made me feel really dizzy again.

1 week after the concussion I thought I was fully healed so I decided to attend a swing dancing weekend I had planned. It made me feel really exhausted, but I just pushed through still. Did not feel too much symptoms afterwards so I attended another swing dancing weekend the week after. Dancing made me feel really dizzy but I thought it was fine anyways.

Then one week ago i danced again, but this time it made me feel terrible. I realized then I should listen to my body and take my health seriously but im afraid its too late now. For a week now I have been feeling terrible. Exhausted, nausea, headaches, dizzy, trouble consentrating. My mind feels off and my head has been hot for days. Today I only went for a walk but feel exhausted. This makes no sense to me as I intially had almost no symptoms.

Im so angry at myself for not taking it seriously in the beginning, but trying now to take care of my own health. Anyone else have similiar stories like this? What helped you get better from it?