Torn Suture or Muscle 7 Weeks After Diastasis Recti Repair? (photo)

i had open diastasis recti repair surgery in June. the diastasis was sutured with prolene. healing has been smooth, until last week. i got food poisoning and vomited a 6 times in the middle of the night. i was wearing my binder (and have been religiously) at the time, and also splinting with my hands. i didn't hear any "pop", and was not terribly sore the next day. its been very sore each of 4 days since, and i fear a torn suture. is this likely/possible? please see the pictures for more. THX!