Not so good news at 29 week u/s and check up

I'm not here to complain, honestly. This situation could be SO MUCH WORSE because my baby is healthy, I guess I just need to hear from other mommies that it's gonna be okay, or at least hear y'all's stories. So all at my 29 week appointment I found out that I failed my one hour glucose test, I'm anemic, and my fluid is low. It's supposed to be 12 and it's at 6. That last part really terrified me, because I feel like this is my fault. My work has been super busy and I've even been taking on extra hours through the holidays. I work a job where I'm on my feet for 12 hours so I know that's not the best for baby. It's also hard to consume extra water because I can't just necessarily go pee when I want to. (I work in the medical field) I expressed these concerned to my doctor right before he told me my fluid was low. It has seriously broken my heart. I feel like because of my job I'm not doing what's best for my baby. I was told not to do anything extra (like the major nesting I've been doing) and drink 90oz of water a day regardless. I go back in a week and a half to see if it's come up and if it hasn't I will be put on bed rest (which is also nerve wrecking because who can afford that 9 weeks earlier than expected?!). I take my 3 hour glucose test Monday. I've done lots of praying and feel a lot better about these things. I'd just like to hear from you Mama's if you have any experience with these things!