Ladies I need your help am I seeing things !!??

Thlyaa

This test was last night I haven’t gotten my period and this week I was supposed to get it... I was feeling nauseous and mild cramping and headaches so I thought I was getting a period but I had a stillborn two years ago and I don’t want to get my hopes up! What are reasons of false positives ?? And if I am pregnant how far along am I ?? The days I logged were the days I spotted in January!!