Post Nasal Drip anyone?!

Chelle • Trying to figure it all out...
I am going nuts over here.  I've had post nasal drip super bad for like 3 days now!
Since I feel totally healthy and my mucus is crystal clear I assumed I must be having some allergy issues ( except that I don't have seasonal allergies ) but my SO told me it is too late in the season for allergies and I would have had issues 3 weeks ago when he was suffering, not now. 
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So out of curiosity I googled 'post nasal drip pregnancy' 
Turns out it's a super common early pregnancy symptom! 
I'm trying not to get my hopes up but I added it to my list of symptoms.   
Things are looking pretty good! 
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Is anyone else experiencing this or had this problem with past pregnancies?