Talk to Gynecologist on Armpit Lymph Node Pea Size

I feel a pea sized enlargement in my right arm pit middle region. This has happened in 2018 as well but dr nah bola tha k razor use krnay ki wajah se hua hai tab koi dard nahi tha and thek hogaya. Abhi kuch months pehlay wapis hua and thek hogaya tha and abhi wapis hua hai and is baat pehlay se bara hai (ab pea size ka hai) yeh mujhe tight kapray jo underarm may tight thay unkay baad feel hua ismay kabhi kabar dard horaha hai (pain level 2/10 ). Hath lamba krnay pay kichao sa mehsoos hota hai armpit may. Family mah koi cancer history nahi hai and maynay razor bhi nahi use kia only wax. Please guide what could be the reason or what dr should i show it to please.