I am sorry to hear about the complication you have experienced. Some of the discomfort you are experiencing may be related to the wide scarring present. The firmness that you describe may or may not be of concern as well; sometimes patients will experience fat necrosis that presents as firmness of the breasts after breast reduction surgery. Ultimately, only in person consultation (careful physical examination) will be able to divide you with specific enough advice to be truly helpful to you. Best wishes; hopefully, after additional ( revisionary) surgery you will be pleased with the longer-term outcome of the procedure performed.
You would benefit from a revision as you seem to have a very widened scar. Your surgeon will be following you to determine when your breasts are healed enough to have the next surgery. It will improve the appearance and MAY improve pain