Each of the websites for developing & fixing products (like Ilford & Kodak) have MSDSes (Material Safety Data Sheets) for the chemicals they sell. These should give you an idea of 'what's under the hood' of the chemicals (so to speak).
The only thing I've seen is that you should wear gloves and use tongs, and work in an area with proper ventilation. And, as Ann said, a stool... definitely a stool. Particularly from the 2nd trimester on!
I have anti-fatigue mats in my darkroom. The concrete is not too great for standing around on for hours at a time! Those mats help a lot!
Well, I think you'll really like it here! We look forward to seeing your prints in the gallery!