Trying to take it easy 🤷🏽‍♀️

So with my job, I grocery shop for other people and deliver it to their houses. I do this all day (8-10 orders a day) which is 8-10 hours, and I do it everyday. Of course people order cases of water, 24 & 32 packs, and 25 pound cat litters, the cart starts to fill up and get super heavy, etc... I also am walking around the grocery store all day, and I start to get crampy. I'm trying to take it easy, I'm laying in bed now, trying to drink a lot of water, I'm just afraid my job is too much on my body. I'm only 3-4 weeks but I don't want to hurt my baby.