32 weeks- Mucus plug- light headed, sweaty palms

So I have had achy legs for the last day. This morning at work I went to the bathroom around 9:30 and it looked like I lost mucus plug (thick, long, jelly but no blood). I am 32 weeks tomorrow. I went back to my desk and I feel like I’m going to pass out. Everything is tingling and I am very sweaty all of a sudden. Any ideas what is going on? I called my OB and the nurse said i only lost my mucus plug if there was blood. I sat down on the bathroom floor and I feel better. I’ve had plenty to eat and lots of water.