1 year old Boston Terrier

Question
hello doctor Connell and staff, I noticed about 4 weeks ago that Jasmine had developed a soft lump on her belly. It exist only on her right side. It is approximately 2" in length and 1" in width. There is no rash or discoloration, but upon probing it closely, I can feel a roundness, like marble-size. I haven't noticed any outwardly display of stress from her. Thank You!

Answer
While I am not a doctor, my advice to you is to have the vet look at it.
It can be many different things but this is a hands on exam that needs to be done.
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While I understand you were looking for a diagnosis, that is impossible to do on the internet (in your dog's case especially) and my profile clearly states that I am NOT a vet and do not diagnose diseases. I am sorry my advice to you was so badly taken. You could re-post your question to a vet in here.