Working in housekeeping need advice

So I work in housekeeping at a big hotel and it involves a lot of walking, pushing, pulling, bending, reaching high since I'm short and lifting.. 
Do you think it's ok to do being I'm 7months.
A lady gave me a scare the other day telling me she did housekeeping not at hotel but this lady house and had her baby till 9months but the cord wrapped around baby causing it to die she says it came from reaching over her head.
I recently had an ultrasound two months ago so I don't think I will be having another anytime soon and baby still moves ..
Should I be worried?