Will my baby be healthy? Should I continue?

Hi everyone, so I found out I'm definitely pregnant after being a week late. I think I'm about 6 weeks now, I am off to the doctor tomorrow so will hopefully get more about where I am at. Someone said to me that because I haven't been taking Folic Acid, I should have been taking this for over a month before and the baby is unlikely to form properly and there might be problems with the Neural Tubes because of me not taking it? If I'd known I would of but I had no idea I was pregnant, I've started taking them now for two days...I'm really worried! Any advice?

Thanks Charlotte 😊