Feeling a cold coming on....

Woke up today and I feel like I have a head cold coming on. I know in pregnancy it's normal to have congestion and sinus pressure, but today I have had a headache along with feeling like mucus is stuck in my nasal passage. Don't know if it's allergies as mine are the worse, but man I do not feeling like getting sick. Anyone else feel like this?? I'm 16+2 and I've heard our immune systems are kinda compromised by 15w.