Jennifer Lopez is pregnant

Jennifer Lopez is pregnant with her first child.

The singer/actress is due to give birth in the spring, according to an insider.

In Touch Weekly magazine claims Lopez and husband Marc Anthony received the good news after visiting her Beverly Hills gynecologist, fertility specialist Dr. Robert Katz.

Sources tell the publication she had an ultrasound performed in a New York office on Sept. 12.

One insider says, "The test calculated that she was about 12 weeks pregnant."

The couple has been trying to get pregnant for the past two years, and eventually turned to in vitro fertilization.

And those close to the couple claim the baby news could be a double blessing--doctors think Lopez, 38, could be expecting twins.

A pal tells In Touch, "The way the fetus is lying made it difficult for the doctor to tell if there was more than one baby in there."

It is not known whether the baby news will interfere with the couple's upcoming tour dates, which begin in early November.

This will be the couple's first child together. Anthony, 39, already has three children from previous relationships.