Struggling

I lost my soulmate of 27 years three weeks ago unexpectedly. We were everything to each other, no children or close relatives. I am totally lost and isolated and can do nothing but cry. It hurts so bad I feel hollow inside. I have been physically sick and on most days not wanting to go on. My doctor put me on some meds. but it doesn't help with the agonizing pain. I feel as though my heart has completely shattered. How do you ever survive losing your best friend, your heart, your everything?