Hello Doctor Im 33 Yrs Ild And First Time To

Hello doctor im 33 yrs ild and first time to take diana 35 pills..i have started taking diana 35 pils and today will finish the 1 pack. Of it..my period still not come this week i gain weight on this pills and i want to change this pills to althea pills..is it ok i i start to change it now or should i continue and wait for my period to comes before i change my pills to althea pills.? Please enlighten me..thank you.