Maternity pay

Hi, just after some info on what I’m entitled to, uk based.

Basically I’ve been at my new work since August 1st, I’m currently 12 weeks pregnant and not sure if I’m entitled to maternity pay?? Anyone who’s at this company is only entitled to government maternity anyway because we have 0 hour contracts but online it says you have to work 26 weeks to qualify for it, is this before being pregnant or during as well? Can’t find an answer anywhere and work are less then helpful due to the owner never being around to answer my questions