Sentence examples for and it was a big problem from inspiring English sources

The phrase "and it was a big problem" is correct and usable in written English.
You can use it to describe a situation or issue that was significant or challenging in a narrative or discussion.
Example: "The project faced numerous setbacks, and it was a big problem that delayed our timeline."
Alternatives: "and it was a major issue" or "and it posed a significant challenge."