Would have been much better off just leaving everything in bitcoin. Altcoins suck.
I'm newbie here, but i have been investing since dec. 2016, and I have that same feeling. The lost during the last months in ether alts has been huge. I wont invest anymore on ether alts.
Investments have never been and never will be about "a few months". Investments take time to appreciate. Especially when you invest in startups that might need years to create their product.