considering quitting my job

I'm 8 weeks along today, before I discovered I was pregnant I accepted a hospital job where I was going to be on my feet for 9 hours at a time with only a 1 30 minute break during the entire 9 hour shift. We weren't supposed to be able to conceive naturally so it was quite a shock when we discovered I was pregnant. We have suffered through a miscarriage before so we are a little protective with this pregnancy. Over the past couple weeks we have ran into problems. I've spotted a couple times and experience lower abdominal pain almost daily and I've been told it's from doing to much and I need to take time to lay back and relax. Also I have had terrible sickness which we discovered yesterday is my sugar bottoming out making me sick and I've been told I need to eat a small meal every two hours during the day, right before bed, and as soon as I wake up. I've been considering quitting (I've only been there 5 weeks) and staying home with the baby through the first year. We make enough to survive even tho it would be right on my fiancées income.... he wants me to continue working saying it's a "good job" but honestly it's not that great.... I just don't know what to do...