Help. Nervous. Just turned 40 and trying!

Da

It's been a while and I just turned 40! I'm nervous. My hubby is 34. We're are excited to be trying. I've miscarried before so i'm trying to be aware early. The first day of my last period was October 29th and the hubby and I have been active. I've burping, bloated, and nauseous... could it be signs this early? Help..