Little cramps/pinching?

Hi ladies. I am currently 5 weeks and 3 days pregnant and have been experiencing little cramps on and off as well as pinching/pulling sensation in my lower abdomen. Almost as if I’m going to get a period but slightly different? This has been happening since 4 DPO. I just get so nervous since I am so early on in my pregnancy. I have had no bleeding so I feel somewhat ok but still do not know if this is normal. Any input is greatly appreciated.