Is back pain at 7 weeks normal?

I'm 7 w 2 d and last night I started getting lower back pain. I still feel it this morning. My first thought was I'm losing the pregnancy. But there is no bleeding. There also isn't sharp pain or anything, just an annoying dull ache. I read that this can sometimes happen early in pregnancy because the body is changing and moving. But I also read that it can be life threatening. Thanks web md lol. Have you experienced this?

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