Hi, i am 13 weeks pregnant now, i already visited my oB-gyne and she give me prescribed drug Folitect as Folic Acid, now, i bought some before and i already take all. now, i can not find this brand in some drug store near our house. can i change the brand of the folic acid i will take even if it is not the prescribed brand of my Ob? I am Apple, 23 years old, 50kgs and 5 2 height