weird feeling in chest

It doesn't hurt or ache and it's not pressure or palpitations. It's an odd sensation that makes me uncomfortable and feel unsteady. Kind of like butterflies but not in a good way. Doctors so far think it's just anxiety. But I feel like everything is blamed on anxiety. I don't know if it's coincidental but before my period and ovulation it is worse. I also feel really tired because I do not sleep well at night. I wake up a lot. I would say I have anxiety and depression but how can I rule out anything serious?