Tell me with your pregnancies in the early stages you had

Tia

.... stomach pain - like a burning sometimes. I’m hoping this is gas maybe? Nausea comes and goes and I feel panicked until it’s back! This is my 4th pregnancy (2 children and 1 loss) and because of my lower HCG numbers earlier this week (that did end up rising and such) I am a nervous wreck! I just feel full. And gassy. And occasionally have sharp burning sensations.