My baby girl breathes really fast and heavy. She's 3 weeks old. The pediatrician thinks it's just her respiratory system developing. She also had a high heartbeat in utero...160-180. One night during the induction it even spiked to 200. I had pre-eclampsia (developed/showed in labs week 39!) I trust the professionals but the fast breathing really scares me, especially because it's worst at night. Anyone with a similar experience or expertise?