How normal is it to get dull cramps in early pregnancy (6 weeks or less)?

I've had two chemical pregnancies already this year so I'm terrified of it happening again. We just found out I'm between 5-6 weeks and I've been getting light, dull cramps in my lower abdomen right in the area where my pubic bone starts. My cervix is high, in between hard and soft, and closed. I've had no pain, spotting, or severe cramps. Is this normal?

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