ASSLAM U ALYKUM
one day i was in ahurry to use the bathroom,after using bathroom when i was about to wear my undergarments ,i saw a drop on it.i do not remember any urine drop leaking.it can not be water since i took off my undergarment completely before using bathroom.i just did not think much about it and used it and prayed.now i am afraid that it might be urine and i have been spreading najasat everywhere.plz help me .jazakallah