Hello Doctor, I M 7 Th Week Of Pregnancy, I

Hello doctor, I m 7 th week of pregnancy, I took folvyte 400 mcg, but now I took hemfer softgel capsules in the night for iron. Whn I started to take iron capsules I did vomit nd all the tym I have a bad feeling of vomit, I m hungry but I cant eat properly from last two days and after taking of hemfer potty is black in coloured. Now I m scared, I m in dubai. Is there any scary about my pregnancy?

Soma Banerjee