Second or Third or More Pregnancies

I was just wondering, to those of you who have had or are having baby number two, three, four, etc. How have these pregnancies compared to your first one?  My first (and only) pregnancy was very easy and enjoyable. I hardly had any sickness (only nauseausness) and didn't get really uncomfortable until the last couple of weeks. I had some back pain and some sciatic nerve pain, but nothing bad at all. I actually loved being pregnant!!

That being said, I have been reading up a little bit on second pregnancies and have found a few things saying that they were much worse than the first. Many women had a great first pregnancy and a horrible second or third one. I am concerned because my husband and I are planning on TTC in the next few months, hoping to get a summer baby. I am going to be in my last year of college, which will include student teaching my last semester. I am getting nervous after reading all this stuff, thinking it might be too much to take on. I had always thought my next pregnancies would be fairly easy, since my first was, but now I'm not so sure.

Any thoughts and experiences are welcomed.