Really light period and really really scared

Madison
Hello so I started my period on Saturday and it is now Wednesday and I'm still bleeding but there isn't a large amount like normal. I had all the symptoms of a period with cramps and my nipples being sore but the lightness is scaring me. I think I'm working myself up and ive puked the past 2 days when I woke up because i think my head is making my body do things. I really need help! Thanks