Seems like a really bad and risky idea to invest in alt coins with the intention of doubling your money on 2 weeks. Its a huge guessing game and it can easily turn on you.
If you lose the money you will regret it even more complicating cancer fears.
As others have suggested, look for coins that have dipped like 15% good coins that will rise. It might not be a 2 week turn around but may take longer
Good luck!
Agree with the above poster, its not financially prudent to invest in highly speculative assets to attempt to meet a near term financial obligation that must be paid in cash. In general crypto is a long term investment comparable to venture capital, there is too much volatility risk in the short run that you need to sell off your coins at the worst possible time. Financial advisors would tell you to have short term savings in cash to pay for these sorts of emergencies.
What you could do is try other strategies for earning income from bitcoins, e.g. campaign bounties, see this article for ideas.
https://www.bitcoin-millionaire.com/make-bitcoins/You could also consider a Kickstarter campaign where you bill this as charity and this might be a better approach. Best of luck to you and your family!
I totally agree with what Coin and Red's been saying. Nearly everything's been pumped to hell and back and finding that magical coin with that magical timeline is quite the ask especially in cryptosphere.
However, you may look into some ICOs - do your due diligence and read/research the team, product, roadmap, partners, and possible partnerships. Augmenting that with campaign bounties will definitely boast your returns
