Can a heated argument cause a miscarriage...i was screaming and crying... i was stressing out....? i'm so worried

No: Stress can cause many things, but i doubt it causes a miscarriage.

Relax.: Stress and over the top arguments can hurt the pregnant female physiology and increase risk of fetal loss - although no reliable studies have address this in detail. Emotional and physical abuse probably account for a large number of pregnancy loss, preterm birth, abruption, small babies. Avoid all stress and depression throughout pregnancy and preconceptionally - to the extent possible.