Prenatal Vitamins 18 and pregnant

I’m 18 and today I found out I’m pregnant after 2 miscarriages I don’t know the reason for me losing my baby’s one 2 months and the other one month. During those pregnancies I always had cramps. And I don’t want to go through the same thing again so I want to make a commitment to my self that I will stop eating junk foods and fatty foods and start eating healthy like veggies and fruits and be on bed rest as much as I can at least for the first trimester ....I WANT TO ASK YOU LADYS WHAT IS A GOOD PRENATAL VITAMIN THAT I CAN TAKE ? I know it has to have folic acid at least 400mcg but how i mentioned I’m not a good healthy eater so I’m thinking I need more vitamins and calcium OF YOU LADYS CAN HELP ME OUT and let me know which ones you were taking during your pregnancy or are taking I would gladly appreciate it THANKS 🌺