Doctors:

They could grow medicinal herbs too

I keep teas and an aloe-vera plant. I know not to allow myself to run out of tea and mind my plant, since there are people who come to me for both. The doctore could not only grow, but store their herbs and even teas. When someone is ill, allow the doctor to make a stew or tea, or go to a herb-bin (like the food bin)to care for the sick. This could be added to their skill level. When a child is born, let the mum go into a hut followed by the doctor. Or one of the older women could become a mid-wife.
Finally, one of the events could be 1. a heat wave that causes the herbs to mold and have to be thrown away. 2.the same event that washes away crop or causes increase can do the same with the herbs 3. like the making of the stew, allow there to be several outcomes to various herbs that are blended ( these herbs made your villiager squeeze, cough, go to the bathroom, sleeply, jump, burns!, makes your villiager well...
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Life is hard. So put on your big girl panties and deal with it.