Shortness of breath

Im 37 +3. I've been having shortness of breath about 2 weeks now. I did bring this up with my provider and he has referred me to a pulmonologist. They can't get me in for another month and a half. I did choke it up to being pregnancy related but the last 2 days it just feels like its getting worse. I see my Dr and fetal medicine doctor tomorrow. Just wondering if anyone has had similar experience? Will this get better after baby comes?