Had a vasectomy 4 years ago and your wife got three positive test can thishappen?

Yes, it is possible for a pregnancy to occur after a vasectomy, although it is rare. Vasectomies are typically effective but not 100%, and sperm can sometimes remain in the reproductive tract for a period after the procedure. Additionally, in rare cases, the vas deferens may reconnect naturally. If there are multiple positive pregnancy tests, it would be advisable to consult a healthcare professional for further evaluation.