Symptoms suddenly disappeared

I’m 5w2d and for the past week or so I’ve been extremely tired, bloated, and my breasts have been very sore and felt slightly larger than usual.. I’ve also had slight weird/unexplainable stomach cramps. From what I read, all of these are expected symptoms. But today I woke up and realized all my symptoms “disappeared” - my breasts suddenly feel back to their normal size and they aren’t as sore anymore. I’m also not feeling any cramping or back pains any more. My doctor appointment is two days away and I’m freaking out. :/ How do you know if you’ve had a miscarriage?