I ate 2 bundles of parsley and also drank its tea...

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regarding your question,

how to lose my baby

well, according to what you mentioned at your question about eating parsley, it is not contraindicated to eat or drink parsley during pregnancy thus why you have to lose your baby as parsley does not cause deformities or problems to baby thus do not worry.

How to diagnose pregnancy

till know you are not sure that you are pregnancy, yes the commonest cause of absent menses is pregnancy but there are many other causes of absent menses. to diagnose pregnancy you have to do blood pregnancy test and the result be more than 25.
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