Limit chance of premature birth?

i am currently 35 weeks pregnant and since i was 31 weeks have been in slow labour i got told to just slow down a little and try and relax more, its a bit hard wiv a 4 yr old and 11 month old and i work! I took a few days of to rest then carried on as normal! It is only now that i am feeling it and have to sit down every 30 mins!