Is there only one correct interpretation? It's really funny (as Mrs. Don-o keeps pointing out) that your interpretation is so different from that of the vast majority of interpretations offerred by Jewish and Christian scholars over thousands of years.
If I found myself in that situation, it would really bother me. I would begin to wonder if it were possible for all those other interpreters to be right, and me to be wrong.
Actually I used to be in that camp. During a long drawn out discussion on this topic we dissected Lev 15:16-18, the Onan incident and three quarters of the rest of the bible. The interpretation I now hold to is biblically consistent in context and across the entire bible. It is true to the original Hebrew as well as to the spirit of the Word. I have not been able to find any scripture that contradicts it. or any circumstance not covered by other areas of scripture where it doesn't make biblical sense
And I came to this belief kicking and screaming all the way. No amount of prayer or study has been able to change the words that are actually there.