34 weeks bedrest & bronchitis

So I am 34 weeks today. Yesterday went to ER for heart palpatations. My heart rate was about 115 resting. And my o2 levels were low 90s and high 80s when sleeping.. I am an asthmatic also, but I wasn't wheezing or having any ashtma symptoms. All test came back good. They tested me for flu & other stuff but my diagnosis was acute bronchitis. so the L&D triage put me on bed rest & gave me two scripts for amoxicillin and prednisone. My note says to follow up with my OB by this Friday or Monday.. And I can't return to work until Monday.. But I am wondering if my OB will end up just keeping me on bed rest until I deliver. My maternity leave is suppose to start oct 24th.. So I would only have 6 to 7 day of work left if she does return me to work this Monday... Been having alot of braxton hicks lately, nothing painful.. Anyone else get sick like this & stay out of work?