I had sex with a 46 year old Asian woman. I put the condom on inside out then flipped it round the correct way. I'm concerned that there may have been pre cum on the condom once I switched it. Note I did ejaculate a couple of hours before the encounter however I did urinate a couple of times before having sex with the 46 year old Asian woman. She said not to worry and her period was 3 weeks away. My concern is how likely is she to get pregnant from this encounter?? 

Welcome back to the forum. However, I don't think I can help very much. This forum is for HIV and STI health issues, not contraception, pregnancy, etc. This is outside our expertise; we are not especially knowledgeable, beyond general medical training, about the issues you ask about. However, I can say that it is exceedingly unlikely that conception can occur without ejaculation in the vagina. And I would say your female partner is responsible for her own pregnancy prevention. Also, if her period is 3 weeks away, almost certainly she won't be ovulating for another week and cannot become pregnant until then. I think you should accept her reassurance about it without further worry.---