Nevertheless, since your ovaries have been removed, there will be an unmistakable change in the functionality of sexual energy. Fortunately, the vital aspect is still there. People who lose an arm or a leg still feel the limb is there because the vital aspect is there; the same is true of the ovaries. The physical part may be removed, but the vital part remains in place. Therefore, you should continue practicing as before. Pranayama harnesses prana, which is not physical.