Breast pain?

I’ve been getting inflamed breast after consuming caffeine lately. I’m a mom and I work full time so I use caffeine to keep me up, no more than about 200 mg a day. I’ve only been doing that for about the last 6 months consistently but never had any issues with caffeine before. I noticed after 400 mg, which equals two days for me my breast get really achey. It starts with surrounding tissue around my breast and if I continue to use caffeine it’ll eventually go to my nipples and make them feel heavier. I do have an upcoming appointment within the next month or so. Anybody else experience this? What do you do for energy when you can’t use caffeine?