Brain concussion. Long it normally last?

3 wks ago I met with an accident and my Head hit on the ground. one stitch on Head but no vomiting, naucea etc except a mild vertigo while moving. CT scan result was normal however I got admitted for 24 hours as a precaution.After discharge I experienced vertigo and pressure&tingling feeling on the opposite side of the Head Injury. During the 1st follow up,the doctor said to observe one more week but no improvement but it was not worsening. On the 2nd follow up the doctor asked to consult an ENT, and the ENT Dr. said that the vertigo is due to BPVV.The doctor corrected it by Head maneuver and in the next five days the vertigo got gradually cleared.But still i was feeling pressure & tingling  on the head on some days so I've consulted a neurologist. The Dr. said there seems no issue but to ensure suggested for MRI. The report was normal and the Dr. gave medicine for the tingling nd pressure nd told not to worry .I'm looking for a second opinion, is this normal?how long it normally last?