Start to Orgasm but cant Finish due to Overstimulation

Hi all. So I am a young woman in my early-mid twentys. I got married a few months ago. My husband and I both remained pure before marriage. Having sex has been wonderful, but I still havnt been able to orgasm. The way it usually works is we enjoy intercourse and after he has finished he works on me by manually stimulating my clitoris. It always feels great and I can tell that I am starting to orgasm but then when it's only half way up my body or less (best way I can describe it) it starts to become way to intense and begins to hurt. It's getting very frustrating for both parties and we are at a loss as to what to do. Does anyone have any suggestions, please? Thank you in advance!

Ps: Due to personal beliefs and moral standards I dont masturbate. It would be very much appretiated if this wasnt suggested as it just isnt an option for me. And as I said earlier, he can get me started, we just cant seem to finish. Thanks again!