Should I change the binder if I am bleeding?

If you have blood enough to soak through your dressing you need to report this to your surgeon.If liposuction was an adjunct often times it's the tumescent fluid that's draining not blood.

I am sorry to hear about the problem you are experiencing. Neither this site nor the emergency room will be your best resource when it comes to accurate assessment or advice. Let your plastic surgeon know of your situation;  nothing replaces in-person evaluation by your own surgeon when it comes  to accurate assessment, advice, and/or meaningful reassurance.   Best wishes.

It is normal to drain the tumescent fluid for up to 48 hours post-liposuction.  The fluid would most likely look like watered down blood.  For your own convenience, I would wait until you stop draining fluid to wash your garment; however, there shouldn't be any problem with washing it sooner.  If you feel the fluid is actually bleeding and not tumescent solution, you should call your surgeon to check.