If I remember correctly, in aliexpress you can ask for your money back after 3 months if the goods didnt arrive so you dont need to get worried at all,
usually it arrives before the 3 months mark, try to use the 17track site to see what info it gives about your package, it sometimes more accurate than what aliexpress giving in their site
if on the 3 months mark it didnt arrive -
* you can talk to the seller and ask him to prolong the purchase protection time (if i remember correctly as long as you in the purchase protection from ali you will able to get a full refund if the item doesnt arrive)
* you can start a dispute to get your cash back, in the dispute the seller can leave a comment, usually the seller will tell you something like "please cancel the dispute trust me its on the way", i usually just tell them that they can trust me that i will pay them if the item will arrive in the following month, and ali just gives you your payment back