Over 65 days after surgery I got a seroma. Could I have caused it by heavy lifting?

It is rare that after 65 days after having your tummy tuck you get a seroma after heavy lifting.   The seroma was probably there and you might have irritated something that was already making it bigger and most cases after this time it is 50/50 whether it heals by drainage. You may have to have the seroma and its capsule removed. Premiere Center for Cosmetic Surgery suggest you see your board certified plastic surgeon.