CM question

So I'm at 7 dpo today and have noticed that I have a sticky yellowish cm that was in my underwear. I haven't noticed this in last cycles and just noticed it today. Could this be a sign that there maybe a BFP in my future? I also had a bout of dizziness around 5 dpo and yesterday breasts started feeling a bit sore and more so today with a heavy feeling. Did you BFP ladies experience any of this prior to your positives?