I need advice!

I went in for a check up today. I am 6 weeks 4 days. The doctor did a transvaginal ultrasound but did not see anything big enough for 6 weeks in the sac. She sent me to do an ultrasound elsewhere to document a viable intrauterine pregnancy and also did some bloodwork to check my hormone levels and I see her again in 2 weeks. Has anyone else had anything similar? This will be 2 weeks of agony for me not knowing if there is anything wrong with my baby. She did not check for a heartbeat or give me any deatails as to why she would be worried.