Dont tell her you are pregnant?!😨

One of my husbands cousine is my friend and we got married same month i got married in August and she in july... i am finally pregnant 1 month and my sister in law said to me dont tell her you are pregnant she will  be sad / jelouse ... because her husband is not with her yet ... she didnt get visa yet so they dont live togheter yet... is that bad if i tell her am pregnant? she got some bad news today .. her husband will not be with her until 6-9 months when she gets her visa