First time pregnancy, HcG levels

Hi all! This is my first pregnancy upon TTC. We tried for 3 cycles and I just got a positive test on Thursday, 9/5. Today st the emergency room I got a blood HcG. The levels are 36. The doctor said they are low. They did an US and said there is an inter uterine visible sack. It’s so early. I have testing on Monday for my levels and a follow up on Tuesday. Praying the levels increase. Happy to receive reassurance, insight and comfort during this time, including many prayers. God IS sovereign. 💗