We had sex last 23rd October. But its unprotected and we have not sure.. so my wife took Pill 72 tablet on 24th 10.15pm and took next one on 25th 10.15am.. is it OK? And will not be pregnant? We already have baby girl age 5 months. That's why we need to prevent from this pregnancy...

Sorry, no way to tell, the pill she took is not 100 percent effective, ( none are) so there is always a chance anytime you have sex. ** no birth control is 100 percent, Condoms for example have a 3 to 10 percent failure rate.

But she and you like 1000's will have to wait to see if she gets her next period.