Hi My Daughter Is 45 Days Old Now. Her Birth

Hi my daughter is 45 days old now. Her birth weight was 3.4 Kg but as on today her weight is 3.7 kg. She is been Walamycin and antibiotics also antidiheora. She urinates 7 to 8 times a day. But I am bit worried about her weight and growth. She also feeds well. Please suggest.