Yes, she could have allergies. Take a look at your home/environment and her food to see if you can find any triggers. Weather changes? It's Spring time which equals lots of pollens in the air too.
If all else fails, give her a nice warm bath, put some vics rubbed onto her chest and a cloth handy to wipe the runny nose.
Some books are to be tasted, others to be swallowed, and some few to be chewed and digested: that is, to be read only in parts, others to be read, but not curiously, and some few to be read wholly, and with diligence and attention. -- Sir Francis Bacon