Concern or normal

6 weeks and done fine all day then started cramping after I ate dinner it slowly intensified a few minutes ago to sharp stabbing pains going back and forth from each side. Is this normal or should I head to the Er? My lower back is hurting too. Taking a bath didn’t help 😩 I had a miscarriage last year in which I didn’t bleed just cramps and carried baby for 10 weeks so slightly freaking out.