6 Week ultrasound Advice

Hi everyone,

Me and my husband are expecting our second child. According to my last cycle I would be around 8 weeks but at my ultrasound the doctors actually say I’m six weeks pregnant. I had the uid so my cycle was always kinda wonky. I went to get and ultrasound and the ultrasound tech told me she saw the gestational sac and the yolk sac but no baby. I was extremely devastated. They told me that I’m early because they don’t normally take women in for ultrasounds until they are at least 8 weeks. With my first child I didn’t see anything until I was 7 weeks pregnant. I have had a few symptoms but I have another appointment next week to see if they see a baby. Should I be concerned? Me and my husband have prayed for this baby and now I’m super worried and have anxiety about my appointment next week. Any advice would be appreciated.