I'm 10 weeks pregnant. My doctor put me on nitrofurantoin mono for a possible uti. A couple hours later I felt like death. Diarrhea, throwing up, severe headache, couldn't eat and dry heaved for hours. I stopped taking the antibiotics immediately. Today I'm feeling a little better. I've taken nitrofurantoin before and never had a reaction like this, but I also wasn't pregnant. Has anyone else had a reaction like this?