Jessica Simpson is reportedly reconsidering marrying her fiancé Eric Johnson as new reports suggest that motherhood has taken a toll on their relationship.

Although the 31-year-old gave birth to baby Maxwell Drew Johnson just over one week ago, Johnson, 32, is said to be frustrated because Simpson no longer has any time for him, according to OK! Magazine.

"She got so emotional that she lashed out at Eric, telling him she doesn't want to get married anymore," a source told OK!

"[Eric] first met Jessica when she was in a more easy-breezy part of her life, where she wasn't constantly having to worry about call times and scheduling conference calls to promote [Fashion Star]," the source said.

The couple of two years announced their engagement in November 2010 and was forced to postpone their anticipated (November 11 2011) wedding date due to Simpson's unexpected pregnancy.

Johnson, a former NFL star, has had one previous marriage as does Simpson, who divorced singer Nick Lachey in 2005.

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Despite reports that motherhood has placed a strain on the couple's engagement, Simpson recently expressed her excitement about becoming a mother on Twitter.

"I am so in love with baby Maxwell! I want to cry every time I look at her. Motherhood is by far the best thing I've ever experienced," Simpson tweeted.

The couple welcomed their baby girl 10 days after Simpson's expected due date, and she arrived weighing in at 9 lbs., 13 oz.

"Eric and I are elated to announce the birth of our baby girl, Maxwell Drew Johnson. We are grateful for all the love, support and prayers we have received. This has been the greatest experience of our lives!!" Simpson wrote on her website.

The pair reportedly spent time picking out the perfect baby name for their first child together.

"They tossed around a lot of names, including some wacky ones like Zinfandel, but couldn't agree on anything," a family friend told In Touch Magazine.

"They're going to call her Maxwell, Maxi for short. Maxwell is Eric's middle name, and also his beloved grandma's maiden name. Jessica wanted a name with meaning," the friend added.