Hi Meenakshi,
The medicine you have mentioned above are not directly related to helping in
fertility or pregnancy.Let me explain each one separately.
The gestafine is a
progesterone hormone supplement ,which is usually given in women who are likely to have a
early miscarriage,it can also be given to prevent early labour in the second half of pregnancy ,but ,this is not supported by enough sceintific evidence.
DHA capsule are health supplements and nothing more.
Syrup zincoaid should be used with caution and should not be used unless absolutely indicated as it contains
Vitamin A ,excess of which during pregnancy can cause harm to fetus.
Since when are you trying for a baby ?How old are you?
The best supplement that you can take while trying for a baby is
Folic acid 400 micrograms to prevent any brain or spine defects in baby .It is advised to take 3 month's before conception and upto 12 weeks of pregnancy.
You need not take any of the medicine above.
Hope this helps.
Regards.