My 10 month lab started season over a month ago and since then she does nothing but whine. She does not seem like her normal fun loving self as she does not want to play most of the time and she sleeps a lot. At the moment all she wants is cuddles and to be near us constantly, which I am not complaining about but still she is starting to worry me as she seems to be very calm (besides the whining) and that is not her. Is there someone that's had the same problem?will she return to her amusing and energetic state?

Almost any behavior can be expected as a female comes in season. Mostly they
Demand attention, show more interest is sniffing around anywhere a male
Marked, and can become very determined and creative about getting loose to
Find male companionship. The vulva will swell and soon start a bloody
Discharge. They become fertile in about a week later. Why not get her spayed as soon as the vet is willing? She will return to her normal behavior, or at least a more settled down version in another month. Then in about 4 months, the flaky behavior will start building up again before her next season. Every pet owner has the obligation to either learn enough about proper breeding or get their dogs fixed. Failing to do so is selfish and irresponsible, creating no end of misery. Please go to Woodhaven Labradors Articles

Spaying and Neutering
Females should be spayed—the removal of the ovaries and uterus—and males neutered—removal of the testicles—by six months of age. Spaying before maturity significantly reduces the risk of breast cancer, a common and frequently fatal disease of older female dogs. Spaying also eliminates the risk of an infected uterus, a very serious problem in older females that requires surgery and intensive medical care. Neutering males prevents testicular and prostate diseases, some hernias and certain types of aggression.

For more on this important surgery, read our top ten reasons to spay or neuter your pet.

Source ASPCA.org

I met a lady at baseball and conversation turned to dogs as it usually does with me, She had a young lab/poodle mix with her and I talked to her about neutering him. She said her first dog a yellow Lab had died from cancer. First she had breast cancer and about 6 years later she had uterine cancer. She said the reason she never spayed her was because she lived on a farm away from other dog's and was not worried that her dog would become pregnant. If she had known the dangers of keeping her intact, she said she would have spayed her in a second. She said no amount of money or tears could save her dog, but spaying would have if she had only known.