Spotting

I’m almost 7 weeks pregnant (I think). I came off birth control in June so my periods were irregular. I think I ovulated August 20th or close to it. So if my timeline is correct I would be 7 weeks this Saturday. Today I have been very very very lightly spotting. I only noticed it when I wiped after using the bathroom. There is nothing in my underwear. It’s very light pink. I did have one brown piece that was stringy, but other than that it’s been very light pink. I’m not experiencing any cramping, however about a week ago I was cramping every other day it seemed. Cramps didn’t last long and were nothing worse than a period cramp, just more annoying than anything. Has anyone else experienced this? I’m most concerned about the spotting. I did call my doctor and she said it’s not much of a concern— actually can be normal, and if it gets more frequent/darker to give her another call. If it’s red like period blood or I get severe cramps to go to the ER. This is my first pregnancy so I’m not sure what to expect. Trying to stay calm because I know baby can feel when I’m stressed. Any feedback is greatly appreciated! 💜