any help?!

Phylisha • I’m 29, married, mother of a daughter in heaven 2/29/16 Penelope Jean and my 2 year old son 5/1/17 Elliott Dean.
I'm freaking myself out! Ive been incredible nauseated this last week and all of a sudden today I'm not!! Should I be worried?! It's this normal?! Im only 7+3. I'm so scared something is wrong. Any reassuring words or yalls past experiences would help me a ton.