Fingers crossed for you, it definitely sounds like it could be a slight ++++
I will say that this month I had a pink line, very faint, but definitely pinkish on an IC at 6dpo. I mean really, what kind of a sane person tests that early anyways???...LOL
I am 12 dpo now and have had clear positives on tests since 10 dpo, but I had definite negatives on the IC at 7,8,9 and 10 dpo. So I really think the 6dpo was just some sort of weird error on the test, so I'd say be cautiously optimistic, and maybe get yourself a nice FRER to test with tomorrow.
Fingers crossed for you.