Sorry about your pain! Be careful, because hand/wrist injuries can become debilitating, if not treated properly.

Have you tried: 1) padded gloves; 2) padded handlebar wrap; 3) raising your handlebar stem; 4) a shorter-reach stem; 5) altering your hand position frequently when riding; 6) wider, lower-pressure tyres?

I experience LESS hand numbness/pain/etc on my road bikes than on my mountain bike, presumably because of the greater variety of hand positions accommodated by drop bars.

You need to try to determine whether your problems arise from position and pressure on your hands or from road vibration.