I Experienced Severe Cramping To The Right Of My Xiphoid

I experienced severe cramping to the right of my xiphoid process. I used mind relaxing technique to get the cramping to stop. It (muscle (?) to the right of XP completely knotted up and bulged out. After about 3 minutes of sheer agony it started to lighten up. Now that area is swollen and so tender to the touch. I was diagnosed with pericarditis last year. Any correlation to the "attack" I just experienced? Should I be alarmed (other than what I was when I experienced this severe pain)? *Note ... this is the second time this severe cramping has occured. Thank you

Unfortunately I do not have additional funds to pay for a possible life saving answer. Of course, there's always the E.R.
How sad this country is. Have money "will live" ... no "EXTRA" money ...well I guess a person suffers and all too often dies. Very sad ... My job too I have to be paid. Naturally. But this method is still ashame. I don't conduct my business this way. Very sad ... Thanks all the same ...