Pain around belly button?

I am 5 weeks, 4 days and today I have been having a pain to the right of my belly button. It's a very dull pain but still there. I thought it might be just gas since I have been experiencing a lot of that lately (tmi I know) but it's a different kind of pain. I just wanted to make sure it's nothing to worry about and I shouldn't call my doc. I have also seen a lot on round ligament pain but I'm seeing that it shouldn't occur until the 2nd trimester? Any advice would be greatly appreciated!