I was taking yasmin for 2 months, I went to the usa and forgot to take a pack with me, I bought the generic version called ocella. I was half way threw that pack when last night I lost it. I'm home now can I change back to yasmin half way trew the other pack or not? Please help

I don't think you should do this. If you aren't sexually active, then it should be OK to skip the rest of the month.. but if you are, use backup and start the new pack the next month.