Quick question

Amanda • Josiah 6/24/16 👶 10/15/16 💍 Nathan 6/14/18 👶 21 years old
This is my first pregnancy and I just turned 31 weeks today! I've only got 9 weeks to go and noticed a little bit of yellow discharge earlier. I've been getting light headed more the last two days as well along with some stomach pain. Plus he feels like he is gonna slip out of me sometimes when he kicks down there. I know this stuff is normal but does that mean I'm getting close to labor? Do I need to be keeping an extra eye on myself? I've had some back pain off and on but not a lot. I'm just confused on it some is all... any help would be nice.