Strange i had a similar effect with some under dosed test found out it was cut and only 40% potent days after.

most likely high mg gear , with the pain your describing i would bank on it. .. my suggestion throw it away. .. fuck uncrashing it. , unless your into pain. ,

Honestly, Test Cyp shouldnt crash easily if its brewed well, unless its a high mg cocktail. Would be an indicator to me that it may be time to look for another brewer. Just my .02

Crashed and most likely overdosed.

Try reheating it to resuspend the test (search crashed gear using the magnifying glass on the tool bar at the top of the page)

If it continues to crash, or you continue to have a high degree of PIP, add some Test Cyp from another source that does not give you problems (start with a half mil) and work your way up from there.

Take it to sources si page, no brand/source talk in open forum.

Read the rules

Same thing happened to me. You have to heat it up and make sure there are zero crystals in Vial before using and mix it with test in Syringe or whatever else your using. I'd you don't expect the same result every single time. Can take 10 to 12 days to stop hurting. You will be ok. Just painful as fuck. If you have questions let me brother.