Pregnant question? Help!

A

I hope someone can tell me if its in my head because i knoe it takes awhile for certin symptoms to happen, or if they experienced this too. And I'm sorry ahead of the time for the lenth, please bare with me this is my first pregnancy so i know nothing really,but anyways.......

.So I found out I was pregnant and we dont think I'm very far along because I'm not very big. But I'm having horrible mood swings, my normal diet is so different normally I eat very unhealthy for being 20 more like a an unsupervised 5y/o. Now I cant stand that stuff I'm eating food thats very healthy for me no suger or sweets actually the of sweets makes me nauseated. And we ordeded bagels and he had butter on his and it was all wrapped up and I could smell it like there was a bowl of melted butter being held up to my nose. I haven't been to the doctors yet we have an appointment next week.