Jessica Simpson has spoken out about her $4 million Weight Watchers deal following criticisms that the company has placed overwhelming pressure on the new mom to quickly lose her baby weight.

Twitter: Jessica Simpson Eric JohnsonJessica Simpson and fiancé Eric Johnson

Simpson has reportedly become emotionally fragile while attempting to fulfill her obligation to lose approximately 50 pounds in five months under the terms of her deal but insists that Weight Watchers is not to blame.

"Just so everyone knows ... Weight Watchers hasn't put ANY pressure on me! I'm trying to be as healthy as I can be for myself and I feel great!" Simpson tweeted on o her 5 million followers on Thursday.

The singer's tweet comes just one week after it was revealed that she is "stressed and overwhelmed" with her strict diet and frequent exercise program, which was implemented just one month after she gave birth to baby Maxwell Drew Johnson. The drastic changes were designed to ensure that Simpson sheds her baby weight in time, according to In Touch Magazine.

"She's so emotional," a friend told In Touch. "She doesn't want to go to the gym. She doesn't want to leave her baby. Sometimes she just starts crying. It's hard for her."

The 31-year-old's weight reportedly reached 210 pounds during the height of her pregnancy, and she is already said to be physically exhausted with the task of trying to reach her goal weight of 130 pounds.

"She's consumed with the new baby," another source told the magazine. "She and Eric are often up with Maxi (Maxwell) all night."

Simpson, who is currently engaged to the father of her baby Eric Johnson, previously enjoyed a more carefree diet during her pregnancy which included macaroni and cheese, fried chicken, and peanut butter and jelly sandwiches.

Now the "Fashion Star" judge has been forced to drastically improve her diet and she is consuming much healthier options, including oatmeal with berries for breakfast, grilled chicken on salad for lunch, hummus, carrots and fresh fruit for snacks and salmon, broccoli and brown rice for dinner.

"She gets so upset. She wants her body back so badly, but it's beyond hard," the source explained. "She'll have the occasional slice of pizza. If she feels deprived, it won't last."

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