I am due for a baby in 40 days and im on a vistor visa can i apply for extension? My entry expires in 50 days?

Yes you may apply for an extension within 45 days of I94 expiration.

My visa will get approved?

If sponsorship documents are in order and you are otherwise eligible, your case should be okay, albeit delays.

The RFE response should be submitted with proper I864 filing and correct version of form.

Can i make my parents citizens even if i get pregnant but not married ?

More information is needed about your parents immigration history and yours before an answer can be provided.

Can a person be deported from the US at night time?

Please rephrase your inquiry with details.

Generally EAD processing is taking about 6 months.

Yes you may request expedited processing and if denied, should not impact the underlying case.

Yes generally domestic travel is safe with limited risk if overstayed visa.

I agree with my colleague - biometrics can take 2-4 months.

Financial sponsorship timing depends on whether consular processing or adjusting status.