Disappearing symptoms super early???

Hi Ladies.  Looking for similar stories... I had an early miscarriage at 5 weeks in June which was my first ever bfp after trying to conceive for almost 2 years (at that time). Fast forward to now... 2.5 years ttc, we just a bfp at 9dpo after IUI #4.  Today, I am 12dpo (super early I know). I have a blood hcg lined up for Saturday. From about 6dpo my boobs were absolutely killing me and I have been super nauseous... all of a sudden, last night. My boobs stopped hurting, I wasn't nauseous anymore and I had some more cramping than I have been having. My lines are slowly getting darker on my hpts, but not as strong as I'd like to see for this being my 4th day of positive tests.  Has anyone lost their "symptoms" that early and gone on with a healthy pregnancy??  I'm so nervous this time around after the loss last time.  Talk me off the edge ladies!!!