Heart pain being released after warm liquid feeling releases?

I have been having on and off heart pain more so intensified over the past month. This evening as I was laying in bed meditating to a "Relaxation" sleep hypnosis cd I felt my heart muscle squeeze and I felt a warm liquid coming out it felt like it went down a valve or my spine or something but, it just felt good warm and soothing. After this happened I was immediately able to breath better and I am wondering what this means. I appreciate any help or suggestions in the matter. Thank You!