I am an occasional cocaine user (m). i consumed cocaine the night before having vaginal intercourse with my girlfriend. the following morning i ejaculated inside my girlfriend. 24 hours later she received a drug screening. possible positive test?

not likely but she may be pregnant and baby may be damaged.

It will be too small a dose to be absorbed thru the vagina to be detected. Suggest you get out of the habit of usage as it is bad for your health and in general dangerous. Good luck

A positive test of cocaine shows up in blood or saliva in two days, a urine test in three days and a hair test drugs can show up for months or years. The drug has to be ingested in your body, the amount found in semen is not enough to cause a positive test, but a heavy abuser can affect a newborn with a large amount in their sperm.