Can you get pregnant while switching pill brands?

I'm nearing the end of my pack, and my pharmacy unexpectedly gave me a new brand of birth control pills. 
I'm currently on Junel Fe, and they just gave me Microgestin Fe (generic of Junel Fe). I looked them up, they seem exactly identical...
I'm extremely happy with Junel Fe, I don't get sick on my periods anymore, not one complaint! I'm worried this change will have different effects..
Can I also get pregnant while switching between the two? I have two inactive pills left, and my fiancé comes back from deployment 4 days from now...