Gestational Sack but no fetal pole

Krystal • Mother of a 9 yr old. Wife to my game developer hubby and expecting baby #2 April 2017. Baby 1.5 went to heave 01/28/16
I went to the OB yesterday after experiencing some weird cramp the night before and I mean only 1 cramp in 8 weeks. Should have been measuring 8 weeks and 2 days. Was told I'm only measuring 5weeks and 6 days by the tech. Doctor says 6 weeks and 2 days. Have to go back next week to check again. Just want to know if anyone else went through this and it turned out ok. Please no stories of it turning out badly, I have enough of that going on in my own head. I just want to know if there's any hope at all. This is my 3rd pregnancy and the 2 prior produced healthy babies... TIA