Should I be taking more vitamins?

I'm currently 13 weeks + 6 - I'll be 14 weeks tomorrow (Friday- 26.Oct)

I've only been taking Pregnacare since finding out I was pregnant at 8 weeks.

I usually see women taking loads of vitamins and I just feel like I'm doing something wrong. Like, I should be taking more than just this one tablet a day. (Which have loads of other vitamins in it)

Any suggestions. I kinda thought my midwife would tell me but if I don't ask they don't tell.

Thanks for your help. ❤