Feeling sick

A couple weeks ago I had jack &box. I had a cheese Burger with bacon and 4 or 5 crunchy tacos. After that I felt nauseous. But never threw up. I havnt since then but I ate green cut up apples and carrots. So I don't know what's going on. I havnt been eating I don't crave any thing anymore. I can't eat anything and hold it down .. I try to eat but Idk what sounds good. Or is good. It feels like I need combination to help . I drink milk , sprite, and water. Idk what's up I havnt been able to throw up. I need help whats wrong . the food seems to be settling on my lower stomach. But moving on down and its not setting right w me. I been feeling like this for 2/ or 3 weeks . today I'm 6weeks along . Need help to what to eat or do . what's wrong w me .