Empty Sac and Feeling empty...

My husband and I were so excited yesterday for our first 8week ultrasound. The doctor didn't see anything via abdominal but that didn't surprise me because I have a tilted uterus and my past pregnancy never showed up via abdominal (miscarriage 7 weeks last year). So the doctor proceeded with the transvaginal ultrasound. Still no baby. She asked if I had any bleeding which I have not. No bleeding at all, no severe cramps, pregnancy symptoms such as sore boobs, bloating, fatigue and frequent bathroom trips were strong and normal. I even had a baby bump! She switched to some sort of color mode that allowed for various flashes of red and blue splotches to appear and pointed to a blue spot on the right side of the sac (which was healthy and thick) and said that was the heartbeat. She didn't seem alarmed and asked for us to come back in two weeks. When I asked if I could hear it she said we just saw the heartbeat and to be patient. (She had already removed the wand and she didn't want to go digging around out of safety for the baby n my cervix with my miscarriage history) I respect that but today I feel so let down, worried and empty inside. I didn't actually see my baby and I know the date of 8 weeks is spot on because I know the conception date. I need so positive words and experiences please! I'm absolutely heartbroken and perhaps heartbroken over nothing.