I haven't breastfed since about 2012 but I've suddenly developed a hot, hard right breast. It's been about 36 hours since I first noticed it was tender around the nipple. It's got hotter, bigger and more sore as the day has gone on. I've just looked at both of them in the mirror after a hot bath to soothe it. The right one is definitely bigger, the blood vessels are more noticeable, but the thing that's worrying me most is I've got some new dimples... seriously, breast cancer doesn't present as mastitis in 36 hours, does it? (I had a hospital admission for mastitis about 23 years ago, but that was both sides). I'm going to try and get a GP appointment first thing on Monday but if I'm honest, I'm quite concerned! Any thoughts?