Hi Charliegirl - I have been on Elleste Solo for quite a number of years following a total hysterectomy and yes, had sore boobs especially as I had been on/off HRT a few times too so each time I went back on I had soreness for a week or two. Did have a scare in the last two weeks though following a recall after my mammogram and to say I was terrified is an understatement! Had an appointment had the Breast Clinic this week and following a physical examination by the Dr followed by an ultrasound it turns out I had a large cyst - and this was showing on my previous mammogram 3 years ago too but had got a lot bigger so needed investigating. Was I relieved - you bet I was as you can imagine. The cyst was drained there and then (not at all painful ) and I watched it disappear on the ultrasound. The Dr did tell me that being on HRT can cause these cysts which I didn't know as it was always Cancer that is mentioned which is obviously the main concern when on HRT . I always did regular boob checks myself and put any ‘tenderness' I felt down to just the effect of HRT so was totally unaware of the cyst being there. So, just to say - be aware and check regularly - it was only a cyst - thank goodness - but still gav3 me an anxious time 😱