Swollen fingers?!

Rey
Hi all! 
​Yeah me again with another problem. 
I woke up this morning to find out my fingers are really swollen and very painful, i tried massaging, putting some ice on them, drinking lots of water, but dod not work.
Weird is that only my fingers are swollen, not my ankles nor my face.
​I watch my diet, my sodium intake and I drink lots of water! 
​I am scared as it may be a sign of preeclampsia? 
​Anyone else experiencing this at this stage, 19 weeks?