Ectopic/early pregnancy question

Redbone
Last AF 3/8 went to the doc yesterday for cervix pain. I had sex the day b4 that. They did a pelvic and vaginal ultrasound and didnt see anything in my tubes or ovary and saw a needle pin size dot in my uterus that could possibly be the gestational sack forming. My hcg was 1017 n now im even more sore than b4 i went in. How many more days before i should go back and see if they see anything? Could it be a possible ectopic again? Arent my hcg levels high enough 2 see more than a speck?