How To Get Rid Of Brown Spots On My Face?

hi i am 27yr old woman and my height is 1.65 and my weight is 63 okay since when i was small about 8 or 10 yr old i had notice some brown spots on my nose and cheeks and after that it became more and more all over my face and than at age 21 it became more darker in color and larger at size so i went to doctor he gave me a cream 4% hydroquinone n a sunscreen i apply the both creams about 2yr it cleaned n cleared my face n at age 24 i got married and came to england uk n i stop use the creams because my face was good at that time but after 2yr i gave birth to my son n than the melasma appear on my cheeks n brown spots became more darker in my face n now i notice brown spots appearing all over my body on my hands n on my feet n on my back n now i breastfeed my son who is 13m old i dont know what should i do to stop my body from making more brown spots please help me