Could it be round ligament pain???

This is my first pregnancy and I am 6w5d. I have had mild cramping since I found out I was pregnant two weeks ago, but in the last 4-5 hours it's seems to be a more localized crampy/pain. I have read as much as I can and now I'm just freaking myself out. I've read some women experience RLP this early in pregnancy, but of course my mind immediately starts panicking I'm having a complication. Has anyone else experienced this? It is coming from more the left side and feels like it's right next to my uterus. It is a twinge that lasts a few seconds and has come and gone for the last several hours. I haven't had my first prenatal visit yet and I'm really worried I need to call to move it up to rule out ectopic pregnancy or any other complications. All my other symptoms have remained the same and I haven't had any bleeding or discharge. Any ideas or reassurance would be great!!