Pregnancy problm. To get less nutrition?

Mam..i was in complete rest in my pregnancy up to 32 weeks because of pain like menstrual cramping.i had susten200bd for first 3months.i had bleeding also till 4mnths.now am 35+3weeks pregnant.taking calcium and livogen and thyronorm 50.i had ecospirin 75up to 32weeks.i have pcod.no hypertension and diabetis.this is my 2nd pregnancy.1st pregnancy lost at 6 weeks with heavy bleeding .after 3 months we tried but failed to get pregnant.then consulted doctr he prescribed clomiphene.on 14th day injected hcg.so i got pregnant.this is my history.now i want to know that my fetus with less abdominal circumference of 280mm at 35week scan has to improve ac.so i have to eat more protein,milk ,fruits etc.ok..but although i eaten well ..i need complete rest?doing house works like mopping or sweeping or cooking will affect my baby to get less nutrition?so i want yur reply.becz i was at rest upto 32weeks.after i am doing cooking works only.not cleaning.so if i do these works will it cause ac reduction