I’m a Nervous Wreck! - Need Advise

So I found out on Valentine’s Day that I am pregnant with my first child. I’m super excited but I’ve also been having terrible anxiety lately. I’m about 9 Weeks 4 days today and I’ve noticed that some of my symptoms have started to go away. The only major symptoms I had were sore breast and cramps. My cramps have gone away and now I’m freaking out. I’ve read some stories on this app about how people knew they were going to have a miscarriage due to their symptoms fading away. I went for an ultrasound on Monday and baby was measuring perfectly at 9 Weeks 2 days with a heart rate of 188 which made me feel a little bit better. I don’t want to stress too much and harm the little bean but I just haven’t been able to calm down. Anyone have any advise or has anyone else felt this way? I don’t have another appointment until April 16th when I’m about 12 Weeks. I would really appreciate any responses or advice ☹️