My Girlfriend And I Have Done Only Oralsex And Only

My girlfriend and i have done only oralsex and only 5 min of sex and i also use condom to have sex with her and i also give a ipill to her and the mensuration period is also over after the 7 day but now some time bomiting comes to her why bomiting is coming after the mensuration period .thus it it is the sideeffect but 10 days gone bomiting is come she she cant do it.she had taken ipill in 35 hour after we have done sex.wats the problem sir ?