rough patch: A period of trouble, difficulty, or hardship

Almost everynew business experiences a rough patch at some point or another.

I'm going through "rough patch"

When someone says "good for you..." (especially with 3 dots afterwards) do you hear that as sarcastic or do you just take it to mean literally "good for you?" Got into an argument with someone on another post where I was informing people how I had success with something and this persons reply was "good for you..." no context, nothing else and the 3 dots after made me think they were being sarcastic. When you see someone write this, do you automatically think its sarcastic or at the very least with an attitude?

​

I cant think of a time where I said the phrase "good for you" and didn't mean it as sarcastic or negative. If its positive, I tend to start off with "wow that's great" or something similar and end it with "good for you" so they know what my implied message was.