I'm 3wks Pregnant N Have Noticed White Worms In My

I'm 3wks pregnant n have noticed white worms in my stools recently! I've been getting chronic pain on my lower abdomen lately it's a bit like labour pain especially at its peak. I'm finding it hard 2 eat as Im vomiting small amounts but regularly bck up burning hot like acid! R these worms infecting my baby r harming her please help I Carnt sleep 4 worrying lisa