Pus after 30 days from inguinal hernia surgery. What's causing it? Something to worry about? (photo)

Suffering from complications of hernia surgery I had about a month ago. The half of incision area (right side of the bandage - picture) opened from the day 3 of surgery and has been treated by putting anti-bacteria (algae) in the wound. It seems almost got healed now. But on day 30, I started to see some blood coming out of the other side of incision (left side of bandage - picture), which I believed healed completely, and I saw some pus coming out.