Ultrasound!!

So I found out I was pregnant I’m not sure how far along, based on the first day of my last cycle the doctors estimated me to be 5 weeks. They did an ultrasound and they said I was defiantly pregnant but very very early. They could see the thickening of my uterus but that’s about it, no sack or anything yet. So they made an appointment for the 24th of this month, exactly two weeks from the first appointment and I’m just worried about all the possible things.. not symptoms of ectopic, but I do have all the regular signs of pregnancy like swollen tender breasts and sleepy, cravings, migraines, etc. I’m just looking for advice on how to settle down and wait.