Vagina cramps

Yesenia • Mommy to Matteo & his lil sister to be here Sept 2016👶👑

Were there any signs or signals that labor is coming in the coming weeks. I am 31 weeks and the last two days I have had increased pressure down there and light cramping and I get sharp random pains in my vagina and am wondering if any mommies experienced these 3rd trimester and if they are sign that I am going to go into labor soon?

*No mucus plug at all, been having loose stools lately.