Almost 6 weeks pregnancy & complete loss of symptoms

I’m a little worried that all my pregnancy symptoms have vanished for the past 4 days now- to the point that I forget that I’m actually pregnant. No sore boobs, cramping, nausea, fatigue, etc. all symptoms are completely gone.

I’ve had 3 miscarriages within the last year including one late-term miscarriage so I’m a little on edge about this. I have an early ultrasound booked on 4/18 🥹 But just saying, I have a really bad gut feeling that I’m having another miscarriage- the same feeling I had before my previous losses.