Waswasas of Kufr

Q: I suffer from a lot of waswas about kufr. So sometimes I utter the Shahada to calm my mind. Does this affect my Nikah? If I hadn't actually comitted kufr but uttered the Shahada out of fear I had comitted kufr, would I consequently have to renew my Nikah as well? Sorry if you find the question strange, but these kind of things are in my head.

What to do During Pregnancy

Q: Respected Ulama, trough the grace of Allah all mighty, my wife has found out that she is pregnant. We are most grateful to Allah, and at the same time we do not want to displease Allah by doing things the wrong way. My question firstly is: Is there any law about a time period were one should not tell others about the pregnancy? Secondly if you can please give some targheeb on what sunnah practices should be carried out during the pregnancy and at the time of birth and the first few weeks? May Allah reward you plenty fold and make your task an easy one.