On September 3, I purchased several pair winter leggings from Aliexpress store open for 3 years with many buyers and many good reviews. Leggings posted September 5. Tracking says leggings left Xiamen for JFK, NY, USA on September 6. It is a week later, and no update. Should I be worried?

Destination Country - Tracking Consuming: 384 ms
2017-09-06 09:38 Origin Post is Preparing Shipment, We have received notice that the originating post is preparing to dispatch this mail piece.
2017-09-06 09:38 CHINA, XIAMEN EMS, Processed Through Facility
2017-09-05 18:47 CHINA, Acceptance

Origin Country - Tracking Consuming: 63 ms
2017-09-06 10:47 厦门市, 离开厦门市 发往纽约肯尼迪机场（经转）
2017-09-05 23:47 厦门市, 到达厦门市分公司国际航站处理中心（经转）
2017-09-05 20:36 龙岩市, 已离开龙岩市分公司，发往厦门市分公司国际航站
2017-09-05 18:47 龙岩市, 龙岩市邮政速递物流公司龙腾揽投部已收件（揽投员姓名：丘栋熠,联系电话:13859585536）