Tender breast

My breast get really sore the week before my cycle and lately it's been out of control. I have big breast and feel uncomfortable not wearing a bra. Today I'm wearing a non padded non wired bra and still feel a ton of pain just my hand accidentally brushing across my breast hurts nor can I sleep at night because they hurt.  I'm about to be on a plane for 5 hours tonight and wondering is there anything that I could do to ease the pain a little. I tried massaging them hoping that it would help some and temporarily it relieves the pain but that would feel awkward sitting next to my aunt popping my breast out and start rubbing. I tried wearing my regular bras that didn't help me. I couldn't wait to get home to rip it off. So can anybody please I'm begging give me any Tips of how I could fix this?