I Am 28 Weeks Pregnant. Ate A Spicy Chicken Sandwich

I am 28 weeks pregnant. Ate a spicy chicken sandwich from Wendy's earlier today along with some fries. About 20 minutes ago I took my prenatal vitamin and I would say like 5-10 minutes after I started to feel sick and threw the chicken sandwich and fries up. My throat feels swollen by this point and I am in much pain from vomiting. I threw up again and this time I tasted blood and also seen it in the toilet. My throat is still hurting however I am hungry and have pizza on the way, should I eat or should I go to the ER?