Vomiting @ 22 wks

I woke up for work this morning with immediate heartburn. I ate my morning Pop Tart hoping it would help. It didnt. I took a Zantac to help. By the time I got to work I was so sick. I ran to the restroom and had it coming out of both ends (sorry). Other info: Yesterday I had a pretty severe anxiety attack. I'm only craving carbs (bread, potatoes) and veggies (carrots). Had my blood work done last wk and iron is a bit low but no worries. What on earth is happening? Why am I so sick again?! Anyone else?