I am Worried about the validity of Nikah.

Answered by 

Once in extreme excitment, my husband drank my milk. Is he now haraam for me? Also, Can my husband masturbate me?

Answer:

It is not permissible. It is Haraam for the husband to such and drink the
wife’s milk, however, the Nikah will not be invalidated. Nikah will not
break. Repenting and abstaining from this unclean action in future is
necessary.

and Allah Ta’ala Knows Best

Mufti Ebrahim Desai
FATWA DEPT.

Original Source Link

This answer was collected from Askimam.org, which is operated under the supervision of Mufti Ebrahim Desai from South Africa.

Link