By far, the most common cause of secondary amenorrhea is pregnancy. The test you took was negative, but I would repeat it to be sure. A second common cause of secondary amenorrhea is weight loss. If you have been aggressively dieting lately, or engaging in a rigorous exercise plan, your periods can stop.
Likewise, if you made millions in 2017, whether from cryptocurrency, your job, or any other source, you are probably at the highest tax bracket, currently 39.6%. Itâs important to understand that these are just marginal rates applicable to you as an individual, and that assets (like cryptocurrency) often qualify for a better rate, known as the capital gains rate.
What is a 'Cryptocurrency'. A cryptocurrency is a digital or virtual currency that uses cryptography for security. A cryptocurrency is difficult to counterfeit because of this security feature. A defining feature of a cryptocurrency, and arguably its most endearing allure, is its organic nature; it is not issued by any central authority, rendering it theoretically immune to government interference or manipulation.