Your symptoms are of allergy
to some unidentified factor for which you may have not been allergic tp previously. This can be food item , some physical environmental factor (like air speed and composition, temperature and humidity) or some sort of insect or mosquito bites. Also things like hair dyeing , soaps or face creams can do this.
allergies do not sow consistent behavior at times and you may become allergic to anything in you life which used to be no cause of problem earlier.
So to identify the situation you should get an allergy profiling done which would be able to give you alist of things working as allergans to your body.
To treat yourself you should keep taking over the counter anti-allergic tablets and consult a physician before the problem aggravated to next level and troubles you in your day to day schedule.