Thanks for posting your query.
From description it seems that abscess
at stitch lie site is partially drained, so that you still feel lump over there.It is better to consult your doctor for proper examination of injury
site and for proper drainage
and appropriate treatment.
Hope this will helps you. Feel free to ask me if you have any further queries.
Wish you good health. Take care.
Dr Saurabh Gupta.Orthopaedic Surgeon