Hugs Olive....it could be thrush but its hard to say. When I had nipple thrush my nipples had a distinct pinky / reddy tinge to them and almost a little bit of a shiny appearance to them IYKWIM? A GP could probably diagnose it I guess? I used Daktarin Gel to clear it up - on my nipples & in DS' mouth. HAve you had antibiotics recently? That can be a trigger. And maybe check out your DDs mouth to see if it looks like there is any thrush in there? I hope it resolves for you soon.

The other thing I though of was whether AF is on the way??