What Causes Pain In Armpits And Weight Gain?

Good morning, my name is Gabby and I have a question. It may sound a little funny! Okay so my arm Pitts hurt Why? I have gained a lot of weight after my pregnancy; I've been experiencing this for about 2.5 years. I used to be a size 4 and weighed about 125 and now I'm about a size 15 and weigh about 180. Do you think the weight gain (being a dramatic change to my body) has anything to do with my arm Pitts being sore? This was never a problem before. Please help me understand why this is happening to me. Thank you.

Warmly,
Gabby