After lifting dresser bent over with right hand. pain and swelling in mid lower back. what do i do. it's been 5 days.

As long as there are: No shooting pains or weakness in your legs it is likely a pulled or strained muscle. Anti-inflammatory meds like Ibuprofen or Naproxen can help. Take as directed. The swelling more concerning. If pain worsens or same intensity last more than 2 weeks should consult orthopedic surgeon for exam and mri. Can take 6 weeks to completely heal.