Sofia Vergara, who is set to marry Joe Manganiello on Sunday, reportedly struggled to write her wedding vows because she has been stressing about her legal battle with former fiance Nick Loeb.

"She wanted to convey her love for Joe and how much normalcy he's brought to her life. But it (the legal battle) was a hurdle for her," Life & Style magazine quoted a source as saying, reports femalefirst.co.uk.

The 43-year-old star is currently locked in a bitter dispute with businessman Nick over the fate of two frozen embryos -- which they created when they were still together -- and while she is dreading facing him in court next month, she refuses to let him ruin her wedding.

"Nick's really trying to put her in the hot seat, trying to force her to answer questions she's been avoiding. Sofia is convinced Nick is doing this to get under her skin. He knows how to stress her out," the source said.

However, she is relieved to have Manganiello 's full support.

"He's the calming influence that she needs. No matter what, she knows she's with the right guy," the source said.