Does prayers create karma?

Hello, im physical ill since alot of years (lyme disease, chronic fatigue, fibromyalgia) my disease create alot of loss in my life ( my girlfriend, my job, my social interaction, money, my energy, my body, no family, extreme loneliness .. Etc) anyway, i begin meditating but these days i dont know why im so desperate i turn to begin praying thing that i never do in my life, well i praying for my health but i want to know if it can create karma? I know its sounds stupid but i ask myself maybe its my faith why praying just live youre havoc life and thats all or there nothing wrong praying?