Low Rising betas - Success stories??

I'm officially in beta hell. I wont wish this upon my worst enemy!

First Beta - 8dp5dt = 81

Second Beta - 10dp5dt = 143

Third Beta - 12dp5dt = 230

Rising but slow. Im being cautiously optimistic still till I go for my ultrasound next week.

Any success stories with slow rising betas anyone? Do you think this looks ok?