deliver Earlier with baby #2 ?

jasmine • I'm Am 19 Years Old And A Mother Of A beautiful baby girl❣️ With A Baby girl on the way 4-10-2018 🤗

Is It True That with Your Second Child You deliver earlier Then Later And While pregnant Your stomach is biggger ?? I delivered At 40 weeks With My 1st daughter And is now 34 weeks with my second With lots of pain and parts of mucus plug falling out since around 30 weeks