Pregnancy worries at week 7

Hi anyone, jus need some supportive encouragement as I am feeling very down. I had light spotting ytd night and is currently at week 7 day 3. Today morning went to see gyane to check wad happen and the ultrasound showed tt there us irregular gestational sac shape. In Addition, baby didn’t grow much from 22 July till today (30 July). Doctor called for hcg blood test today and on Monday. She said if Monday hcg level is lower than today then maybe it’s so not good news. I am 36 this year and this is my first. Has anyone encountered similar issues but went on to have a healthy pregnancy journey? I am just praying for miracle. But also mentally and physically tired. A lot of anxieties and worrying a lot.