Hindi ka lang, sis, a few of us mums actually complained about this din, lalo na pag matagal kaming natulog sa isang position or stressed ang katawan from all the parenting chaos haha! But since it's chest pain, kahit okay ang breathing mo, better to check with your doctor lang talaga para masiguro it's nothing serious, better safe than sorry, especially pag may baby ka na umaasa sayo. Let me know kung ano ang sabi ng doc!