best to ask your doctor/surgeon.
i stopped fish oil 1 or 2 days before i had surgery, tho i cannot recall if i was told to do this or just read it somewhere.
i no longer take fish oil in any form, i just eat fish & minimise omega 6's.
a few weeks prior to my surgery i received a pre-hospital admittance letter from my doctor which read;
"Certain drugs interfere with normal control of bleeding, or response to infection. If you are taking any of the following drugs, you should follow these instructions carefully prior to surgery."
There was a long list, but fish oil was not mentioned.
on a side note, it did mention two Herbal medicines;
for "herbal medicines containing Ginko or Ephepra" - "Please cease 3 weeks prior to surgery."