### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I am under IVF w/ ICSI Fertility treatment. I had 3 PGD tested Normal embryos. I had done 1 FET transfer of 5AA embryo which resulted in Negative Pregnancy with ChatDoctor level was less than 1. After a gap of 1 month I again went through a FET cycle in which I have transferred 2 6BB PGD tested embryos. Following is my timeline 9 Oct - took 10,000 unit of ChatDoctor 16 Oct - Transferred 2 6BB embryos 19 Oct - Progesterone Level is 36 22 OCT - Spotting # 1(pinkish - for couple of hours) 24 OCT - Spotting # 2(pinkish - for couple of hours) 25 Oct - Beta 1 testing - 11.7 ChatDoctor & Progesterone 39 my BETA 2 test is scheduled for 10/27 - Can this be a chemical pregnancy and is there still a chance of twins even though ChatDoctor level was low with BETA 1 test.

### output:

Hello, thanks for the query. Any pregnancy detected by doing beta Chat Doctor but not evident on scan is biochemical pregnancy. Yes, this could be a chemical pregnancy as you mentioned. The likelihood of continuation of pregnancy depends on the serial nearly doubling values of beta Chat Doctor every 48 hours rather than a single value. Having said that beta Chat Doctor of about 11.7 is interpreted as a low value to expect a marked rise on the next testing and to witness a clinical pregnancy except in extremely rare situations. But clinicians do want to wait and see to give it a benefit of doubt. Hope your concern is ad Chat Doctor.  Take care.