I'm really sorry about the break up u had with your boyfriend. I broke up with the father of my baby for a lot of good reasons and it does hurt and at first I didn't want to keep the baby and I had a hard time eating. In order for me to start eating again I just kept thinking about the baby and that its not the baby's fault. I have had problems in the past with things and I was worried about being a single parent but then I have my family to help me out and as long as u have ur family and love for your baby I wouldn't even think of the break up. It is hard tho because being pregnant and not having his support is a lot to go threw but family and friends can be a better support system then anything. You'll do great and just think of your baby and the joy he or she will give u.
First stop stressing. Second try a glass of milk or something lite as long as you're not starving yourself you'll be ok. Most important is to stop stressing though. Take a bath call a friend go shopping something to relieve yourself before you harm the baby
Places like CVS or walgreens sell ginger lozenges. Get a box and remember that baby should be first. And make yourself eat. If you must mix some corn meal with chicken broth and make it like a soup. It's all I can really keep down now that I'm 37 weeks