Please help!!

Kendal

I'm 49 days late on my period. Had a little spotting a week or two ago but that's it. I've been feeling extremely exhausted lately and now starting to get extremely nauseous. My breasts hurt so bad as of this morning. I took 2 pregnancy test when I noticed I was late on my period last month but still haven't had my period but they came back negative and worried. Please help!?..