By your description, you had a TLIF at L4-5 and L5-S1. That’s “Transforaminal Lumbar Interbody Fusion” (see website for details and video of surgery). The spacers used in between the vertebra to hold them in anatomic position are called cages.
You have current complaints of lower back pain but no leg pain. What was your surgery done for? Did you have incapacitating lower back pain or leg pain or both?
You are only two months out from surgery and even though I would expect your lower back pain level to be less at this point, you still have plenty of time to heal. With allograft, the healing typically takes longer so don’t despair. It may take up to a year to heal with allograft.