Alright ladies , I need a few opinions . I'm 5 weeks pregnant today ! I went to the hospital on 10/4…

Alright ladies , I need a few opinions . I'm 5 weeks pregnant today ! I went to the hospital on 10/4 my hcg levels were 73 , baby was too early to see on a US but everything checked out fine , my cervix were closed & looked fine.10/7 I went to the hospital due to very mild left PV pain , did another hcg level test which was 243! Did another US still no gestational sac . doctor wants me to come back in two days to do another hcg level test & possibly another Ultrasound. My questions to you ladies is , how early were you able to see your baby on US & does my situation sound like it could take a wrong turn as far as a ectopic pregnancy??? Again the pain was very mild and nothing major & I haven't had any type of bleeding since I found out !