Dear Rcheung, hello.
along with frontal headache (forehead area) along with heaviness in eyes are suggestive of sinusitis
. Does your headache is least in the morning and increases as day passes by? Does your pain increses on bending your head down? If yes, they are furthur suggesting towards sinusitis.
Take antiallergy along with decongestant after consulting your doctor. Steam inhalation will help you in relieving your symptoms.
Also get you blood pressure checked and eye refraction
done to rule out other causes.
I hope this is helpful to you. Thanks.