Whats Happening To My Female Swordtail?

Ok so my swordtail has weird lumps on her. There white. She naturally is sort of translucent , so you can see the bumps inside of her. They have been there for about 2 weeks but recently the main one on her top has pushed up out of her body and is now like a tumor.

Ammonia- 0
Nitrite - 0
nitrate- 0
ph- 7.6 (this has been constant ever since i set up the tank, i think its just my local water)

check out the pics.

Ok i dont know if i uploaded the pics correctly, so heres a link if the pics dont show up.

http/tinypic.com/view.php?pic=5d0ac9&s=4

THANKS

Size of tank in gallons or ltires.
How many fish and which type.
Water stats in ammonia, nitrite, nitrate, and ph.

So the lumps are beneath the skin.
Does she look thin or bloated.
What does it look like when she goes to the toilet.
Check her anus to see if its enlarged or red and inflamed.
Does she have a sunken in belly.

All you can do is issolate her and try a bactetrial med.
If it is a tumour there no cure.

"20 gallon community: 4 platys,5 von rio tetra, 2 female swordtails, 2 pygmy corys! " - from mysignature..
Ammonia- 0
Nitrite - 0
nitrate- 0
ph- 7.6 (this has been constant ever since i set up the tank, i think its just my local water) - from the last post

she looks normal except for the bumps, not thin or bloated.
When she uses the bathroom it looks normal and just like all the other fish's
The lumps do look like they start from beneath the skin.

Is whatever sickness she has contageous to the other fish?

Its a long shot but does it sound like this.
I would try a bacterial med if you can issolate them.
Lumps can be bacterial, tumours, parasites.
http/badmanstropicalfish.com/articles/article25.html a link to lumps and bumps.
Furunculosis



Symptoms:

Fish may present with frayed and inflamed fins, raised bumps underneath the scales which rupture releasing pus, and may also have large bleeding ulcers. There may also be hemorrhages in the internal organs, skin, gills, fins and muscle tissue. Not all symptoms need be present.



Cause:

Aeromonas bacterium, which infects a fish via skin parasites or when it ingests feces from infected fishes or feeds on the remains of dead fish.



Treatment:

Ensure that your water conditions (e.g., Ammonia, Nitrite, pH, Nitrate levels, and water temp.) are within their proper ranges. If not, perform a water change and/or treat the water accordingly. If your fish can handle it, raise the water temperature to 80 degrees or a little higher. Furunculosis is generally a cold-water disease; higher temperatures may help to eradicate the illness. Infected fishes should be isolated because when the lesions rupture, bacteria are dispersed throughout the water, leaving all fish at high risk of infection. Furunculosis can be highly infectious. All fish, including those not yet showing visible symptoms, as well as the aquarium they inhabit should be treated. Treatment should include one of the following: Triple Sulfa, Furacyn, Nitrofura-G, E.M. Tablets or Furan-2. The use of medicated food is also prudent. In addition, if parasites are suspected all fish as well as the aquarium they inhabit should be treated with an antiparasitic medication. Adding an appropriate amount of salt to the water may also be helpful