I am on the west coast of the U.S. and for several weeks I have seen two large, twinkling objects in the eastern sky at night with the naked eye. In between them there are 3 smaller ones that are stacked vertically and very close to one another. All 5 rise in the sky as a group as the evening progresses. Could this be Orion? Thank you.
Using the calsky.org website, this is a chart showing a view of the eastern night sky from a point near San Francisco, CA at 7pm this evening. (The green tick mark on the horizon is due east).
Orion is located between the moon and the horizon, and will be rising quickly.
Now that you have extensively modified your question (in particular the stars now rising in the east), then yes this is Orion. The upper bright star is Betelgeuse - you should be able to see that it is red - and the lower bright star is Rigel, which is bluish white.
The 3 stars in the middle form Orion's belt.