Hi. All of last week I have had a slight what feels like a headache but feels like a aching pain too. But I know the week before I did have a cold.?

? Sinus Congestion. Sounds like you still have some sinus congestion. This is one of the rare times that people really can have a "sinus" headache. Treatment is decongestants, steam inhalations to "open up" the sinuses and get them draining. You need to make sure that you don't develop a bacterial infection from the lack of drainage. Probably should see a doctor to get definitive treatment..