Braxton Hicks at 8 weeks? Anyone else?

I don't remember what Braxton Hicks feel like anymore since it's been so long but I'm wondering if that's what I felt last night. It happened as soon as I got off the couch and was just a dull, but very long, pain in my stomach. It hurt to breathe in. I finally laid back down and it subsided. I'm 8w1d when it happened. I read that they start at 6 weeks but are often unnoticed. Really wish I could remember what they feel like!