Avangi makes a good point - most spell checks will tell you that a word doesn't exist - like "confeused" should be "confused." But it won't help with words like "replay" which should be "reply."
One thing that you should start to work on right away is to NOT use text message abbreviations like "ur" instead of "your" and to make sure you use a capital letter at the start of your sentences and for the word I.
(And thanks to Avangi, I realized I forgot to welcome you to English Forums.)
(And lastly, I make a lot of spelling mistakes too, and I write for a living. That's why we have editors.)