排期一下子前進了，由於我化學專業，生寶寶就暫時沒有工作，現懷孕。有兩個問題
1。niw對於同一領域工作的要求要地有多嚴格，如果我140中是有機合成，現在如果找到一個biochem 的 postdoc instrumental job，有一點合成，但不是很“有機”要不要緊，會rfe麽？同一領域，有機化學跟生化算不算？
-Hard to say. You need to check whether your new job responsibilities/job classfication code is in the same as that of the old job.
2。排期下個月就到了，我又多長時間的期限遞交485？
-You do not have to file the I-485 if you do not want to. You can file it any time as long as the 排期 does not retreat (turn back).
過多久不遞交我的原來批準的140失效呢？
-No time limit. Your NIW I-140 is always valid.
