Weird spot on my upper stomach???

Kalley

Hi! I have had this spot right under my right breast for going on two weeks and it hasn't gotten bigger or itched or anything like that. I know pregnancy can make your skin really sensitive (I'm 15 weeks). But I'm freaking out that it's melanoma or something. I don't see my OB for 4 more weeks. Should I make an appointment with my GP or just wait until my next OB appointment since it isn't growing or bothering me. Any help would be great!! Thanks in advance.