Think i have found lump on r upper side breast, hard, pea size, area also seems swollen, tender, noticed 4-6 wks ago. not preg, not assoc with cycle ?

Ultrasound: at your age most breast lumps can be normal findings like this that will come and go with menses. It is okay to watch this finding for a few months to see if it goes away. If it does not go away then you will want to see a doctor and get an ultrasound. This can will help determine whether or not it has concerning features that require a biopsy.