Have I taken my pill late? Confused

[MummyE12345]

I’m going to sound really dumb now but I get confused easily So I’m on cerazette which I know is a 12 hour window. On Thursday I took my pill at 7pm, on Friday night I forgot to take it and took it when I remembered which was 10pm. I’ve dtd this morning and now I’m confused if I was actually late taking it?

Think I’ve worked it out, think I was only 3 hours late