If you're worried, is because you invested more than you can afford to lose. I would not sell it right now, if you ask me...

Not too long ago, we were at $5000 per Bitcoin, and doing a technical analysis, we can see that it's not going much lower than the current price.
Regarding the fundamentals, I also don't see good reasons to say the price will go much lower. In fact, it's the opposite, since we have segwit and there is no more spam on the network.