Ease my mind please 😞

Anyone else so paranoid for their first appointment? I’ve had no reason to believe that everything won’t be ok but with it being so common I can’t help but worry. (I also had a threatened miscarriage with my last baby at 6 weeks, thankfully it turned out ok, but I’m constantly on alert) I go on Friday for my first ultrasound, I’m 6w3d today and I’ve had bad all day nausea on and off for about a week now (I’m surprised it hit me so early actually, my last I was about 8 weeks) I’ve been bloated and extremely tired but the minute I’m not as bloated as before or the minute I have relief from nausea I get worried. I’m trying to put my mind at ease. Who else?