I just meant I thought things were good now they're bad all of a sudden I have no idea what's going on.
Did you say these words to her? Don't make her guess. Don't say "I don't know" and make her have to figure out what you mean.
The roller coaster lasts a long time and there will be ups and downs for years. Just accept that as one of the consequences.
As a general question, do you have communication issues with other people as well?