Help!

Nayely

My last period was on june 30th and my blood pregnancy test came positive. I had stomach cramps at first and decided to go to the doctor. I dont have any mor pain right know and mu hcg levels keep going up. But doctor said my yolk sac doesn’t seem normal. And i need to go back next week to see what we can do. Do i need to worry? Or just wait if something good happens ? The photo is my yolk sac!