I am 9 weeks pregnant, 35 years old. Tonight I found a rather large lump on my right side next to my breast (but not on my breast at all). It's visible just by looking at me and comparing to my left side. It's not painful and I don't feel anything substantive or hard. It's about three -four inches and goes from my side around to my back. I have a check up with my ob on Friday but am curious to know what might be going on. First time being pregnant. Have had some pain when I lay on my side and rest my arm in that area but I assumed it was due to the painful breast issues that comes with pregnancy. Any ideas?