im 7 weeks pregnant. i've been cramping but no spotting. its this normal

i've been cramping since i found out i was pregnant. Like kind of a sharp pain in my lower belly sometimes , it probably could be my uterus growing? it goes away after about 3-5 seconds. i have had no bleeding with it. but i figured i would also have more symptoms. i don't have morning sickness, but I frequently feel nauseated , my boobs and nipples hurt, I pee ALOT and have the urge to soon after I do, but im always hungry and excessively thirsty ! other than that i wouldn't know if i was pregnant or not.