This firs time Mommy needs some serious advice

Hi, so I'm 8w4d pregnant and I've had quite a smooth pregnancy. I saw my baby's heartbeat at 6w6d and it was healthy! That being said, I don't feel pregnant and really haven't had many symptoms throughout the entire pregnancy- especially this weekend. Like- nothing. I'm having nightmares and fears that I've lost the baby. I haven't bled or cramped, but there are some really sad stories on this app about women who have seen the heartbeat and the next appointment- their baby doesn't have one. I'm really just nervous since everyone on here seems to be suffering through at least one symptom. Please- seeking for some good advice/maybe people who were in my same boat!