You could be getting a caffeine pill for all you know. Your friend wouldn't know either. I would've taken the whole thing.

The feeling is E, imagine the highest level of happiness and you have MDMA.

People die from E usually from not drinking enough water, or drinking too much. 2% of E deaths that are directly linked to "E" derives from the compound PMA, not MDMA. Watch out for PMA, they're usually bigger than your normal E pill.

MDMA is a drug you should not do from week to week. Constant use of MDMA can cause possible neurotoxicity, which is why you should wait a month or two before you try it again.