U r suffering from a condition called Melasma. It is a skin condition characterised by brown or blue-gray patches or freckle-like spots. It's often called the mask of pregnancy. Melasma happens because of overproduction of the cells that make the colour of your skin. It is common, harmless and some treatments may help.
Pregnant women have increased levels of the hormones estrogen and progesterone. These hormones are thought to contribute to your melasma. Melasma is a typically chronic disorder. This means that itâs long-lasting. Medication is available to control it and prevent further progression. Consult a Dermatologist for the same.