[GOboobs]

One doubt very much if milk
Can be clear fluid, but it’s not milk

If it is then you need to get checked for prolactin levels 

Lotus will be the expert on this though

Julie

It is a clear fluid.
If it is not milk, what is it


Is it dangerous one?

If you're using suction types of devices, especially for extended periods of time, it could be serum, the primary stuff that blisters are full of.