Red marks

Hi a few days ago I noticed a swollen duct now I have about 7 red raised marks around the nipple area and a couple of small red marks on my bus I’ve put It’s not going, but it actually really hurts. I can’t lay on that side at night because it’s really painful. I don’t know. I I don’t want to panic and run straight to the doctors, but I also don’t want to ignore Advice, please