Boob problem

So I have cyst in my breast and I’m not sure if they ever went away. I really hate when a guy tries to lick my boobs or nipples because I’m self conscious about them. Last night I was trying to stop the guy from sucking them and he literally would not move his head I kept pushing his head away and he was just stuck there sucking my nipples like ew.. the next day i went around really fine no problems and a few hours later I’m really have aching in my nipples which I NEVER get.. it hurts so bad and is so sensitive on and off randomly.. I don’t know what it could be and I’m scared. I can’t even touch it or it will hurt. He didn’t suck on them hard or anything so I’m confused. Anyone know what might could be going on?