welcome to Health care magic.
1.Yes it can be related to the injuries in 2013.
2.It may be incidentally started recently after the
injury.
3.The x-ray findings says left sided tilt if the spine and spondylotic changes, these are seen in some age related cases, excessive hard working people.
4.Its good you had an appointment with
MRI scan, it will exactly give a picture about the status of the desc,
nerve, chord. ( which are not seen in case of x-ray)
5.Ifeel like you have to start with
back pain exercises and lie on the flat bed and maintain position on daily basis - this itself will help you to get relief.
Hope it helps you. Wish you a good health.
Anything to ask ? do not hesitate. Thank you.