OK deep breath. It's ok. Spotting in early preganncy is SUPER common and ectopic pregnancies are rare. Please don't jump from pink CM to an ectopic pregnancy - that's like jumping from sneezing once to Ebola. :)
Most likely explanation is that you ovulated late and it's just early. Also likely is that it's a chemical (and while I know chemicals are hard, they are really common and most of the ladies on this site myself included have had at least one, and they don't cause any complications and you'll still be able to TTC this upcoming month, so don't stress over that.) It's even possible that you're just not getting dark tests yet due to dilute urine. That this is ectopic is so so so distant in likelihood that it's not worth even entertaining the idea right now, let alone getting upset over it.
I have a motto for dealing with my anxieties and it is "There will be time enough to worry when we know if there's really something to worry about." For right now, I want you to try to operate under the assumption that everything is ok (because it almost certainly is.) If you ovulated later than you think or have just gotten oddly light tests up till now, then all is well and we'll see the tests darken up in time. If you are having a chemical, it will resolve within the next couple of days. These are by far and away the most likely case scenarios here. And if in the far distant chance of ectopic, there is time to figure that out and they'd not be able to tell yet anyway, and would have you wait and see - so you'd still be in limbo for now.
What I do know is that getting really upset is not going to help either you or this pregnancy in any way. Remember, there will be time enough to worry when we know that there really is something to worry over. Right now, there isn't, and so I'll say congratulations and just know that we're out here :pray: for a sticky baby and sending you all the pink dust we can. :heart: