Could the tingling sensation in my vagina be a sign of pregnancy?

Yes. When you become pregnant their is more blood flow to the vagina which can cause this sensation, .
Unknown. While this could be a symptom of pregnancy, more reliable signs include a late or missed period, breast swelling or tenderness, nausea and/or vomiting, or changes in appetite. The most reliable sign is a positive pregnancy test, which you can purchase or have your clinician perform.