Hindi po highly likely, pero may very small chance talaga kasi may pre-ejaculate na pwedeng may sperm, especially kung hindi pa fully cleared after thirty minutes, pero honestly, ang risk ay super minimal compared sa unprotected intercourse. If kayo ay concerned about pregnancy, the safest move is always to use protection like condoms or have her take contraception, kaya mas makakatulog kayo ng mahimbing without the worry.