Hi Petmad
i have had this before ,and i am having it at the moment too, yesterday it was so sore i had to take painkillers, i am pretty sure its hormonal, i had the mirena coil fitted 2 weeks ago, and i believe this to be one of the side effects, at the moment i am very achey, but in the past i have had terrible stabbing shooting pains, in one or other and occasionally both, and i found taking evening primrose oil helped a lot, but i had to take it for a few months to get an effect. i have been to gp endless times in floods of tears, as i too fear that it is always something more sinister. i have general lumpy breasts, and i am rather well endowed in that department too, so when you are affected by hormones in this way, there is a lot of soreness.lol..
But i would always say, if something is new or different to you , always get it checked out.
ps, forgot to mention, i also has the itchy nipple thing, havent had it for a while but i could literally have clawed my skin off it was so dam itchy... again the cause.......... hormones..
oh to be a women.....
Take care and best wishes
P x