I am 42yrs on 13 day after embyro transfer there...

Dear Customer,

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What is duphaston ?

Duphaston Tablet is a synthetic progestogen and has a similar action to the female hormone, progesterone. It is used to treat menstrual disorders in women caused due to a lack of hormones. It is also used to reduce the risk of miscarriages or abortions

What are the causes of dark blood ?

1.High estrogen level 
2.Pregnancy 
3.Ovualtion window 
4.Residual blood in the uterus
5.Uterine shedding 

What do we recommend?

The medication you are running on are great and no need to add another drug and it might be just uterine shedding or hormonal imbalance especially if you have no other symptom but do a gynecological check to be more relieved.
We wish you all the best ,
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