R A N T - I fainted at work!

Mackenzie
I am 18 years old & this is my first baby! I'm due in May. I have been working for a landscape company 40+ hours a week... it's very tough work. We run heavy equipment & it's all day in the sun while wearing jeans & boots. I had known I was pregnant but I hadn't gotten into see a doctor. My boss knew & we agreed on me taking it easy. We went in to have lunch, I just felt off. I went to the bathroom & took my shirt off & tried to cool down. I laid on the floor bc I was scared to fall & injure myself. I fainted while I was laying down! I had told my boss I needed to go to a doctor & see what is going on & it was ignored. We were a couple towns away on a job site &  I have to have a CDL to drive the work truck. I couldn't leave & it was ignored. I was told to tough it out. I worked the rest of the day. I know it's not absolutely crazy that I fainted or anything but I should've been seen or something! Long story, but I haven't been back to work since! I've been scared... Should I go back to work for him? Or find something a little more safe!? Bc he has blown me up begging me to come back! I just cannot risk it!