11weeks 2days and cramping. Should I be worried?

Sh
So ever since yesterday I've been having light mild cramping but yesterday I was constipated. Today the cramps feel totally different. They're still mild but more like before I get my period and I'm feeling very nauseous like hard for me to eat, drink, or even smell anything. I have had a lot of gas today like burping a lot. So could it just be that? or Should I be worried? 

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