Pregnancy?

Heather

I had sex with my boyfriend yesterday and the condom broke but he hadn’t finished yet. I’m supposed to start my period in 2 days and I didn’t wanna spend money on a plan B if I didn’t need to. If he hadn’t ejaculated, are my chances of pregnancy the same as if the condom hadn’t broken? and do I need to worry about being pregnant? I am not on any other birth control