Only started to feel fibrocystic breast pain this year. pain and tenderness in both breast outside period window. 1) is it because i am in my reproductive age? 2) better to sleep with or without bra? 3) best sleeping position?

Well just to be sure I think you should do a urine pregnancy test. This can be done at home. As far as sleeping you can I have to try different ideas try with a bra and without. Wearing or not wearing a bra will not change the swelling but it may feel better one way or the other. Same with position in your body just try to get as comfortable as you can. It’s likely that it will decrease soon.