Waterbelly not draining

I thought my chicken was eggbound so I was giving her espon salt baths but she was going to the bathroom normally and I couldn't feel an egg. I did more research and figured she has waterbelly. Yesterday I drained about 20 milliliters from her and today I went to drain 30 because she is still pretty bad but nothing was coming out and she was bleeding. I did it the exact same as yesterday. I watched this tutorial and used a 20-gauge needle

https://youtu.be/ildPP9CmJAk