8/9 weeks, feeling “not pregnant” anymore?

I am almost 9 weeks, 8w5d, and I had my first appointment on Monday at 8 weeks exactly, the baby was measuring 8w2d, and we got to see the heartbeat which was 175. Up until my 8th week I had all day long nausea, and extremely sore boobs. Now, tonight I’ve noticed I wasn’t nauseous at all today, and my boobs are not sore at all. I’ve spent my day looking up statistics about miscarriages and I can’t help but to worry myself due to it taking SO long to conceive this first baby. Any input or advice would be so helpful thank you 😊