Poop TMI!

I'm so sorry that this is about to be TMI! I'm about 7 1/2 weeks, and I can't remember the last time that I pooped... IF I do, it's only little nuggets. My stomach always feels tight and hurts when I stand up straight, but no matter how much fiber I add to my diet, it doesn't help. I exercise regularly and drink plenty of water. My first OB visit isn't until the 26th... Does anyone have any safe remedies?