HI I Have A Mammogram 2months Ago ..the Found That

HI I have a mammogram 2months ago ..the found that there is a shadow in my right breast.They ask me to come back for mammogram after a week ,the result is the same shadow..I never feel anything and theres is no lump..They advice me to go after six month..Did i need to go back for mammogram after six month..Idont like so much radiation on my body..thanks ..I appreciate you're reply..Maggy