I'm pregnant and have very serious asthma. I puff my proventil (albuterol) inhaler atleast 6-7 times a day. Can using my inhaler too much harm the baby or me?

Yes. You need to see your obstetrician right away or go to urgent care or emergency room. If you are using your inhaler that much, then you need a steroid to be added to your daily regimen so that you don't run the risk of a full blown asthma attack which can harm you or the baby. Definitely call doctor today or if you're having any shortness of breath, go to emergency room today. Best of luck.