Pregnant? Hang over? Or something else?

[DestiniRivas10]

Hello ladies.  
Okay so March 3rd 2016 I start my period ended maybe around March 5th or 6th, I had unprotected sex March 13th and my ovulation calendar says I ovulated around the 17th... My conception date according to the calculated would be the 13 - 20th....  

April 3Rd I started my period once more..  

April 14th was my 21St birthday and no matter how much I drank I couldn't even get buzzed.... ( mixed liquor drinks)

Then lastnight April 24th I had maybe 7 shots that's about it and I still didn't get buzzed but today I've been extremely Nauseous and having straight water diarrhea since lastnight and just a very fullness to my belly,  I can't eat with out wanting to vomit..  

I'm not a person who ever gets hang overs. ND I looked it up but nothing explains the fullness to my belly and diarrhea..

I started getting worried and I looked at my body in the mirror and have bright blue veins all over my chest. And enlarged breast.   And with my first child this is normal around the time in pregnancy I started to get them..  

I wanna wait and see if I get my next period in a week or so if not I'll take a pregnancy test...

What do you ladies have to say?  Maybe pregnant?  Or just a hang over?  Or something else..