It is normal for the breast to become painful after being pinched, because the breast is rich in nerves and is sensitive to touch, so once it is squeezed and hit, it will become painful, and the pain will be relieved soon. If the pain persists after being pinched, you need to apply local heat, and if necessary, you can go to a regular hospital to do an ultrasound to determine the specific situation. If you have pain after being pinched, consider whether you have mastopexy or acute mastitis. Mastopexy is accompanied by swelling and stinging discomfort in the breast during the menstrual cycle, with symptoms relieved or disappearing after the menstrual cycle, while acute mastitis has local redness, swelling, heat and pain, with palpable lumps.