This thing is driving me crazy right now!!!

I'm on forums quite a lot and this is a pretty new experience to me. I wrote 1 post and while still typing it, the screen went to the forum index. No sign of what I had just typed. Then I re-wrote the message, of course it came out different. I posted that. Then a few seconds AFTER it showed the 2nd post...the 1st post showed up!!! So I go to edit the 2nd post, and when finished, I click on "submit". Instead of editing the previous post ...It put the post I was editing back as it was and took me to writing a new post. That's where I am now. Confused and frustrated!