Is the time right to invest in ethereum or is it at a bad time? 
Yes, This is the right time to invest in Ethereum. Because the Ethereum price is very low now. But this is not the end of the Ethereum. Ethereum price will rise within a very short time. Because Ethereum is a very popular coin all over the world. All the ERC20 tokens are Ethereum based. So you can invest in Ethereum now without any fear.