Cramping😖😖😖

I am 6 weeks 2 days. I’ve had some mild cramping off and on for a week but yesterday it was much more intense and it was terrible overnight, waking me up several times. It really feels like my period is coming, but not one drop of blood. I took a pregnancy test this morning and it is still very clearly positive. I am so confused. I know some light cramps are ok, but has anyone had severe cramping as a pregnancy symptom? I feel like I am having a miscarriage but I can’t understand why there is no blood and my pregnancy test isn’t any lighter.