Are they truly slow rising? If they're doubling, then they're not slow rising. If you're only 6 weeks along and already hearing a heart beat, then that's a very good sign. Somewhere around when you hear a heart beat, you no longer should rely upon the beta numbers. If you have concerns, you really should talk to your doctor about it.
*TW All the Loss* #BitterHagPartyOf1
October 2015 - 1st MC. 7-8 weeks along. Suspected molar PG, but luckily just a MMC.
June 2016 - 2nd MC: 4-5 weeks CP
September 2016 - 3rd MC: 4-5 weeks CP
RE 1: ALL the testing - 'unexplained' "Yinz can do IVF or try on your own"
Feb 2017 - 4th MC: 6 weeks
RE 2: More tests. Still 'unexplained.' Called fat for an entire hour-long appointment, cried a lot
Re: Slow rising HCG levels
October 2015 - 1st MC. 7-8 weeks along. Suspected molar PG, but luckily just a MMC.
June 2016 - 2nd MC: 4-5 weeks CP
September 2016 - 3rd MC: 4-5 weeks CP
RE 1: ALL the testing - 'unexplained' "Yinz can do IVF or try on your own"
Feb 2017 - 4th MC: 6 weeks
RE 2: More tests. Still 'unexplained.' Called fat for an entire hour-long appointment, cried a lot
Feb 2019 - 5th MC: 6-7 weeks
IUD - March 2019-March 2023
RE 3: Repeat all the tests. Hoping to try IVF.