Loss of symptoms

I found out really early on I was pregnant. Had my first ultrasound at 5 weeks and 6 days and baby was visible and heartbeat was at 111. I don’t have my ultrasound until the 29th and I am now 9 weeks. I noticed half way through week 6 that I was not experiencing as much symptoms. I went from feeling fatigue and napping to feeling completely fine and barley experiencing any nausea. There are also days where my belly feels bloated but today it seems flat. Please help