Googling is awful. Sally1959 summed it up just about perfectly.
Whenever I google, it's almost as though I'm praying to some deity at a digital altar. "PLEASE tell me this pain on my left side is harmless!"
But the nature of the internet is that the most bombastic, fantastical, and dramatic results bubble to the top. Thus, even though there may be a hundred different causes of left side pain, the scariest ones will fill that first page of results. Case in point: I cannot think of a single human being who has never experienced a headache. But if you google "head pain", the #1 result is a scaremongering *****! article about "head pains you should never ignore". That's the sort of stuff that rises to the top.
Don't google. Ask AnxietyZone if it's tolerable. If the pain or discomfort is intolerable, ask a doctor or go to the E.R., even if it results in a big debt. Anything else - googling, asking on health websites (which are full of people with HA who don't know it yet and thus haven't made their way to AnxietyZone) - is just going to make you worry more.