I am 6 weeks pregnant. During the 5 weeks 4days gestational pregnancy, i got my internal ultrasound done. There appeared to be only the sack and no fetus pole. I am called again after 2 weeks for ultrasound. I am currently taking folic acid tablet and susten 200. Do i need to take any injections or medicines for the fetus development? I am 34 yrs old. I am worried as my doctor tells me thst its a 50-50 chance for me. I rarely have any nausea or sickness. Please suggest.