Understanding maternity policies!

Hey everyone!

I am a Chartered Accountant working in a Big 4. On the personal front, I am now looking forward to being pregnant in next few months. As I spent 5yrs in the same organisation, it would be easy to be pregnant staying in the current company. However, I am not happy with the compensation here and have also been looking forward to move into a strategic/corporate dev role. I feel quite underpaid in my current job.

I cant delay my pregnancy and I might feel guilty about stepping into a new company/role and going on a maternity leave. Also the policies should allow me to take a paid maternity leave. My notice period in current company is 3 months and I havent given any interviews yet.

Looking for your suggestions and experiences to understand how I can navigate through this situation better. Also would like to know how are the policies around maternity leave in other organisations? Is there a requirement of an employee to be working for a year in the organisation to be eligible for maternity leave?