Nidalee Spear in mid lane, often stealth

I have seen alot of stealth spear being thrown mid lane lately , i can hear the sound, i BARELY cant see the spear, near the 2 bushes. The spears are being thrown IN the lane . It happend one time in top lane near the bush at the second turret too.

Any people experience this? It's quite annoying to get your health bar to 50% because of stealth flying object.