Drink Alcohol While Seroma Is Present?

I had a tummy tuck Lipo and breast lift 4 weeks ago. I developed a real small seroma 7cc on my left breast 7 days after surgery it is healing real good it's just a little bruised like a yellow greenish color .. Can I drink alcohol while this seroma is still present my PS said it was fine as long as I don't drink excessivly. And is the bruising normal my PS said as long as it yellowish that's a good sign.