You were 5 days late and your period was 2 days less than you normally have it. Although it is possible, it is highly unlikely that you are pregnant.
When you say you are needing to use the washroom, I presume this is to urinate (pee), that and your other symptoms are likely to be a urinary infection.
You should really be seeing a doctor before Monday. Regardless of you not liking walk-ins, I feel you do need to see a doctor to examine you. Urinary tract infections, stomach bugs and also infections in the tonsils and ears can make you feel like this.
In the meantime, take things easy and drink plenty of fluids as well as water. Don't worry if you can't eat at the moment as long as you are getting your fluids like fruit juices, clear soups as well as water. If your "period" is gone, you can do a sample of your pee into a clear clean glass and look at it. A cloudy urine, one that is dark, or very strongly smelling can indicate a urine infection. A dark urine may indicate an infection, but also can be a sign of dehydration.
Don't wait until Monday, get seen by a doctor.
Let me know how you get on.
you could be pregnant but till you have a test,it is not confirmed..see you physician and get tested
THE ONLY WAY YOU GOING TO KNOW IS BY TAKING A PREGNANCY TEST AND SEE A DOCTER. HUN THATS ONLY WAY ARE IT COULD BE SOMETHING ELSE