38 weeks,1cm, having trouble breathing?

Madi lane

today I have had alot of trouble breathing! It just feels like I'm out of breath all the time, non stop! What could this be? Im will be 38 weeks tomorrow and on monday, my dr said I was dialated 1cm and could feel the babies head! I think I started losing my mucus plug and she has definatly dropped...I can feel her moving down there and I have contractions but they dont really get stronger. help?