Ease my worries mind!

I'm almost 7 weeks. The only symptoms I have are wicked sore boobs, occasionally nauseous but it's quick and uncommon, and other little things. My worry is that maybe my baby isn't alive anymore.its horrible I know and maybe it's just the slow progression of the first trimester but my mind is going there...I have my appointment on Thursday but I'm such a worry wort. I know everyone's different but anyone else like not have morning sickness or food sensitivities or anything?!