Beta not quite doubling...freaking out!

Emily

We had an early miscarriage in October 2017. We have been TTC for a little over 3 years with a year of <a href="https://glowing.com/glow-fertility-program">fertility treatment</a> which brought us to <a href="https://glowing.com/glow-fertility-program">ivf</a>/icsi. We had a single 5 day embryo transfer on June 4th. I got my vvfl on hpt at 5dp5dt. My beta on Wednesday 9dp5dt was 115, today 48 hours later 11dp5dt it was 210. I am so concerned that my numbers didn't completely double. After everything we have been through I can't help worrying. Any advice would be appreciated!