Cramping

Amanda
I recently found out that I am pregnant again after going through a miscarriage last month. Today I woke up with some cramps that seem to resemble my last time being pregnant. I heard its normal to cramp while pregnant but when should I be concerned? I'm not bleeding and have no other symptoms besides cramps. Also I constantly feel like when I go to the bathroom im going to notice blood. Is it normal to be parinoid especially after my miscarriage not to long ago?