what is this?pls help im freaking out

i noticed it today its very itchy Its summer time and there are a lot of mosquitos and bugs around us in my town, could this be because some bug or dirt touched my skin or should i be worried its just itchy and when i google the symptopms it says breast cancer

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Is this under your breast? Its more likely to be caused by either an insect bite or ,…more likely , a rash caused by sweaty hot conditions. Its often caused by a tight bra so if you can, leave off your bra while its hot and wash with cool or even cold water .Stop thinking cancer…this is not cancer I am pretty sure.