C.G.
No use in continuing the pill, I would stop the pill and WAIT for my body to "flush" it out and get back to normal, (one or two months) then start trying. I'm on the exact same pill LoestrinFe 24 and I read the little instruction of use packett and it says that it may cause birth defects and to discontinue inmediately if pregnant. so I would really recommend you to wait a bit after you stop taking it. that's what I'm going to do anyways since we will start trying for #3 next year. sorry for the lecture but just wanted to give my honest opinion,
Good luck!