Only a bad day!

Yesterday was a hard day! I did everythings that I would have done normally. At night, I prepared to go to sleep and I was me felling (feeling) very well.

So, the day began, born,  I woke up, and I me felt like I was another person. because of many pains, stomachache, nausea and I am here now... Having a bad day!

or

So the day began: I woke up and I felt like I was another person because I was having some pains: stomachache, nausea, and here I am now, having a bad day!

I think that I haven't done nothing anything different.

or

I don't think I've done anything different.

Well, at least I don't remember it. I want me to feel better in soon, just it! I hope that tomorrow , I could can have a good morning!