I need answers please!!!

A few weeks ago I was cramping really bad, I couldn't wear jeans or anything tight or my shorts it had to be yoga pants, sweats , leggings etc. I was feeling really dizzy and light headed for awhile and I was not only cramping horribly but I was having pressure as well in my lower abdominal area, I was supposed to start my period yesterday and it hasn't came yet. So I took a test last night and I swore I saw a really faint line, this morning I took one and I don't see anything!

This picture was from this morning .