6 weeks cramps

hi, it is my first pregnancy and i have been getting cramps at my lower abdomen and lower backpain pero sa left lang. 1 to 2 a day that will last for 2 to 3 mins. sometimes may navel hurts too.. but no bleeding. is this normal? also, i dont have nausea and dizziness. or morning sicknes, i dont have cravings just sore breast and cramps. im kinda worried if all im feeling are normal. thank u.