Talk to Gynecologist on Pregnancy, Need Gynaecologist Assistance

Hey Doc. I am currently six months married. We had protected sex for all these six months but I missed my periods this month so I took a strip test and it came out positive. I had my last period at 21st of July, which probably means I am in my sixth week pregnancy by now. As I wasn't very sure and unprepared so I decided to wait for more 15 days to go for a blood test and connecting to anyone. Currently I am only taking care of my eating habits but not taking any vitamins or smth. Now moving to my concern, I recently got familiar with signicance of folic acid during 1st 12 weeks but I didn't take any. I am in deep stressed now. Is it too late?? Koi masla to nhy hoga ager abhy start kerun? As 6 weeks already guzar gaye hain! Probabilities kya hain?? Aur folic acid start kerun to kya 5mg ki dosage safe hay? Qn kay I have read 400mcg leni chahye.