I shld also say that I've had two miscarriages in the past and this pregnancy. The dr said I had a cyst that ruptured and that may cause cramping
I had cramping most days till about 11 weeks was really worried so had a early scan at 9 weeks and every thing was fine I was told it's normal :)
I had hot flashes starting 7 weeks and they went away around 10... I'm sure they will come back soon though. Its normal due to hormones. The cramping you have should be relatively mild, less painful than period cramps. If there is no bleeding I would not be concerned!