Another mucus plug/labor question lol

I lost some of the plug today I’m only 36 weeks but every day for several days I feel crampy off and on. Baby has been low for weeks and I have awful vaginally pain. Over the last hour I’ve started with more of a sciatic pain in my butt cheeks and I have this pressure in my rectum that feels like I have to poop. After I lost the plug part I had a substantial (about a tablespoon) amount of sticky creamy thin white yellow discharge gush out. Second baby just makes me wonder if I should be on high alert