Yes, more of like cramp type, random, strong ache, usually only lasts for few minutes. The pain episodes comes and goes and present for a few days then goes away for a few weeks then comes back the same way. Have zero idea what may cause it, the only thing I can guess tight shirt or bra, irritates the skin and muscles in that area, or muscle skeletal pain related to certain movements.
I have not had a random sharp pain in my arm pit YET. I have random sharp pains in other parts of my body. Day before yesterday, I got a sudden sharp pain in my big toe. It hurt so bad, it made me jump!