Your skin has become a little sensitive. This is an aberrant behaviour of scar tissue, and it is probably best to tolerate this for a few months. If you have no benefit, consult a skin specialist. Skin specialists often have some creams that can help.
The only other treatment, I think, is surgical excision of the scar, but this will not give guaranteed results. Therefore, overall you should tolerate this discomfort for a few more months.