Just the other day my breast were sore so i decided to squeeze my left nipple and clear liquid came out i took a home pregnancy test and i am not pregnant . i also have a 2 year old that i breast fed in the past im really scared im 19 years old and ive been researching all night and day and things like cancer, tumors come up, and it just makes me want to cry please help
Go see a doctor. Breast changes, including discharge, should always be examined by a professional.
That said, I really doubt it's anything too dire. A LOT of women are able to get discharge from their nipples if they squeeze them. It's even easier for women like you who have had their bodies preprimed by having given birth previously. It can be a side effect of many common medications. Usually it's harmless.
Definitely go see a doctor to rule out anything bad. But don't panic just yet.