Is it close?

So I'm 35 weeks and last night I took a shower and me and the hubs was going to do the deed. So he goes to go down on me an I'm feeling really wet just thought I was horny. So he goes kissing down there and he said baby your leaking. Totally embarrassed I jump up and go to the toilet and there is mucous all down there and all over my crotch. I still gave him a blow job and he puts it in and it hurt! Change position not so painful anymore but still tons of pressure. What's going on?