Is it oozing cloudy material (pus) or a clear yellowish material (serum)?
If the latter, you may simply have an a seroma, an area where the sides of
the wound have not adhered.  side-to side pressure on the wond may help, if
you can figure a way to apply it.  Simply compression might help if there is
no practical way to get side-to-side pressure.  If cloudy material, you may
need an antibiotic or may need to have the wound opened slightly and cleaned
with a peroxide applicator stick.  It might also heal without intervention.
If there is surrounding pain, redness, or a sore lumpdeeper, it may require
more attention than if none of those are present.

It sounds like a build up of what I think they call serum (fluid), and yes,
it can be very bloody-tinged. After my original lumpectomy my breast swelled
up so much I couldn't stand the pain. I went back to the surgeon and he used
a syring and drained a few cupfuls away. The relief was immediate, and it
then healed very nicely.

It might be a good idea to turn over onto your stomach and let it drain out
if it is running freely enough. Probably feel better afterwards.

But if it smells bad, or looks like an infection see the doctor.

Marni

Two years ago my wife, then 69, had a lumpectomy that continued to drain as
you mention. Since we were on our way to the West coast for vacation a week
later, The Dr. said it was my job to probe the wound with a Q-tip on a daily
basis to keep it free of puss, etc. The excretions were bloody and didn't
look nor smell pleasant. Doing this for two or three weeks the wound healed
from the inside out. Initially I could probe to the depth of 2/3 of the
Q-tip. The last few days only the tip of the Q-tip was needed. A month later
everything healed up fine and there was no further problem with the breast;
only mets through out the body which we are now fighting. . . . Hang in
there Hoosier, and I'm sure it will heal nicely... Van