Could not wearing your surgical or sports bra 2 days after surgery cause a hematoma?

Not wearing a surgical bra would not be a direct reason for hematoma. In about one in 50 patients this complication occurs And has no long term consequences if treated promptly.

Hematomas are caused by excessive bleeding into the breast implant pocket after surgery.  Hematoma is a medical term which can be broken into two parts:  1) "heme" meaning blood; 2) "oma" meaning a swelling, in this case caused by blood.Your question would indicate that you wore the surgical bra for the first two days, and then apparently took it off.  Forty eight hours after surgery, it is very unlikely that the normally restricted post augmentation movements would lead to a collection of blood if a surgical bra was not worn.The short answer is that post surgical garments rarely, if ever, decrease the chance of a hematoma.

Hematomas are caused by a number of reasons, so it would be difficult to say for sure whether not wearing a bra would be the exact reason in your situation. Either way, you should always follow your surgeon's instructions.

It is unlikely that not wearing supportive bra with producing hematoma. Hematoma usually from bleeding that has not stopped within the breast tissue. Hematomas need to be treated early to prevent long-term complications such as infection and fat necrosis. Good luck

Using any type of support Garmen after a breast augmentation will not cause a hematoma to form.  If your breast are symmetric then there should be no evidence of a hematoma as well.  

It is extremely unlikely that failure to wear a specific garment after surgery was because of a hematoma. Best wishes.

Many factors can cause a hematoma after breast augmentation.  However not wearing your bra is not one of them.  If the hematoma is going to occur, it will occur whether or not you are wearing your bra.