Pregancy?

Today marked me suppose to be starting of my period. This morning i woke up, exhausted! So i drank half a cup of coffee because im trying to limit my caffeine and i ate my usual peanut butter toast for breakfast. I was fine until i was on my way to work. In the car my head started hurting badly. And then when i arrived at work i started to get super nasuted. Like not normal kind of nausted. So i go to the bathroom and i had diarrhea and after i got some more coffee thinking it was a caffine migraine withdrawal. I smell the coffee and wanted to vomit. So i go to the bathroom and puke my breakfast up and go to work and drinking the coffee still, it wasmt helping at all. Take it, i had a feeling i was pregnant and today marked my two week wait period for AF. Not arrived. Thank god. But my friend tells me to just drink water and so I do and finallt i go and vomit again and drink more water and the headache goes away. So did the nausea. About 9am and take it i go in at 445am. So im fully convinced i am pregnant because i dont vomit. Ever. My body refuses too. Plus AF is a day late. I took a twst, negative but takes forever for urine tests to vomw bavk positive. Opinions?????

Ps: Benn having mood swings totally different from when im PMSing. My mother is afriad lol!