Mucus plug at 33+3 days

Alissa • Dear son born 5/7/18. Three angel babies. Dear son born 8/27/20 and pregnant with our first girl and last baby Pittsburgh PA-C

Hi all. I had a big chunk of mucus plug come out today. I'm in only 33+3. I know it can regenerate but this is baby #3 and I've never had my mucus plug come out until much later in pregnancy. There's no bloody show but I'm terrified of preterm labor especially since baby girl is breech. I have tons of Braxton Hicks which my ob knows about. Anyone lose a big chunk at 33 weeks and still have a term baby?