Two days ago I noticed a lump on my left breast, I’ve been to see the nurse practitioner today who said it’s a  hard rigid lump to outer aspect of left breast- approx 1cm diameter, and felt it was concerning. She’s referred me to breast clinic however there’s a back log and looking at around 3/4weeks. I’m sick with worry, I had a full duct removal of the right breast in 2022 due to concerning lumps. Any advice at all please? I also stopped breastfeeding 4 weeks ago however this lump feels completely different to any lump I have felt before and no inflammation or general swelling which i would normally get with a blocked duct etc.