Hi AJ,
No, osteo-arthritis and rheumatoid arthritis are two COMPLETELY different conditions. OA does not lead to RA; however, RA can lead to OA, so it's easy to see how the two can become confused or thought of as the same disease.
OA is purely wear-and-tear, congenital deformity or injury related.
RA is a malfunction of the immune system that causes it to attack it's own healthy joint tissue.
With proper treatment, chances are your pain will improve.