I had similar situation like yours in the past and eventually received with status few days later with status remain as processing. 
Best person to clarify on this is to contact Lazada customer service, they should give you more details about your parcel.

should receive sms and email once they send to deliver already. the web tracking is quite slow to update..

4 days and tracking shows my item is still "delivery pending".
Am I screwed? Using Ninja Van.

Where do you find that info. Mine kosong saja. Also standard delivery period/date changed from 13-17 to 15-19 

Took them 16 days for my item to arrive. My case last time was a little late than usual cos Raya holiday.
But still, I ordered 2 weeks before raya.

Keep giving excuse like cant find my house, when my house could easily be wazed or even just simply use google map.
Other times okay, mostly unreliable unless you are living in the city.
I gave like a million directions to my house when they call. Keep calling back saying cant find.
Every time fail to find, will have one day downtime. And it stacks up.

My brother said if your item doesnt arrive, dont call them. Let them call you.
If not they will talk you into picking up the item yourself.

Dont worry. Different place will have different experience. Maybe yours will be fine.
Im just unlucky Gdex Rawang sucks.

Remember if they tell you to pick up the package yourself (if they give excuses like cant find, no ppl at home etc), insist on them to deliver.
They are famous for saying ppl not at home when ppl at home. =.=

ermmm no...rawang is like a different country here...

very far from civilization..

even the natives there got very different facial structure...

Like I said it depends. Just like telco, different reliability for different places.
My address is Rawang, but Im at the edge of Rawang, close to Sungai Buloh.

What frustrated me the most is my house is Waze-able. 
Still cant find my house in this day and age of modern technology is unacceptable.