My hcg levels are still rising so my ob wants me to come in for another u/s next week July 24th half…

My hcg levels are still rising so my ob wants me to come in for another u/s next week July 24th half of me feels like whats the point the other half of me is thinking maybe things will be okay I just hate to get my hopes up I just want everything to be okay I just don’t understand how you can see a strong heart beat then the next week you see nothing 😫 this is so stressful