This pregnancy feels so different then my last 2. I constantly feel like I can't breath (which then…

This pregnancy feels so different then my last 2. I constantly feel like I can't breath (which then gives me a full blown panic attack) my legs and feet are swollen 2x normal size, my legs are constantly tingly (RLS) which makes my panic attacks worse and makes it impossible to sleep. The scary part is I'm only 27 weeks and still have a ways to go. I seriously feel like I cannot do this anymore. I'm extremely vulnerable, which is out of the norm for me. Any ladies have any advice on what I can do? I'm at my breaking point.