mucus plug

Okay ladies I'm 28 weeks tomorrow I thing I'm losing my mucus plug this is baby #5 for me all my baby's were late/on time but on Tuesday I had some cramping and all day wensday and still today I was thinking Braxton hicks since it's about That time but now I don't think so much since I had lost small part of my plug should I be getting looked at or just wait also I never felt good contractions with all 4 baby's I went through labor like it was nothing naturally I have a very high pain tolerance.