Sorry for the TMI but I'm not sure if something is wrong. Am 28+3 weeks pregnant. DH and I had sex this morning and about half an hour later I started feeling very woozy, nauseous and have blurred vision. I keep feeling like I'm about to be sick/lose conciousness but this feeling fades in and out. DH has gone out with the car, I am stuck inside because of the snow and ice. Is this fairly common? What should I do?