no fetal pole

i said i wouldn't do this. so im looking for positive outcomes because i know all the bad ones. may 1st i went to the toilet and was slight pink on toilet paper after passing urine. immediately paniced and got a drs appt. sent me for a scan the next day. I then had brown spotting. as thin as a strand of hair. only when i passed urine. as far as i know im 8 weeks tomorrow. so at the scan, two weeks a go id be 6 weeks, the ultrasound person tried to do it through my stomach, not transvaginal or whatever the big word is. she couldn't see anything which upset me but i knew it was too early for that way. she did it the other way and she checked every centimeter of me she was really good. so they found two sacs. one empty and one with a yolk. she found fluid behind my womb, i have no idea what that means. She said the empty sac could form but 90% of pregnancies start at 2 sacs so im not bothered about that. she aaid she couldnt see a fetal pole or a heart beat but said they could be testing too early to see anything. i keep seeing pwoples scans and rhey see a heart beat and evrrything. so now im worrying. i went to the drs and they signed me off but didnt want to do anything else. so no bloods or anything. has anyone had this and gone on to have a healthy pregnancy?? i got all symptoms of being pregnant. no more spotting besides those 2 times. i got a scan tomorrow to see if the yolk has grown or whether it isnt viable.