what is happening

Af isn't arriving till the 17th may,been ttc for the past 2months my last af ended on the 22nd of April, I've had sex a lot since then up until Sunday when my boyfriend went bk home to work.

I have pcos and in the morning when my bladders full I get a bad pain in my bikini area so I've just got up to go to the toilet so the pain will go, as I'm sitting on the toilet I suddenly feel all clammy and can feel the sweat on my face, my mouth goes dry An I feel like I need to be sick, I've been constipated all week but now it's runny and I had a really bad cramp twice all these symptoms have gone now, I've never felt like that in my life ....has anybody experience this before ?