
try not to worry hun. With my 1st I didn't know the suggested taking it B4 you conceive so only started taking it when I knew I was pg which was at about 6-7 weeks.
Little man is now 6 and absolutley fine.
With DD I was more prepared and started taking as soon as I stopped taking BC pill so was taking for ~ 2-3 weeks conceived.
DD3 was unplanned so again didn't start folic acid until I was nearly 6 weeks. Again LO is fine.
It is taken to prevent neural tube defects such as spina bifida, it is only a big issue if there is a history of problems.
Lots of foods contain folic acid anyway so you will be getting some.
Make sure you take it now & try not to worry.