Does increased eye pressure mean that I have glaucoma?

Maybe. Glaucoma means the pressure in the eye over time has caused damage to the optic nerve. Increased eye pressure is a risk factor for glaucoma but it does not necessarily mean you have it. Examination and evaluation by an eye md can help determine if you have glaucoma or are at risk of glaucoma and if treatment is needed.
No. If you are told you have increased eye pressure, you should get a glaucoma eye exam to confirm the elevated reading and to test for glaucoma formally.
Possibly. Interestingly eye pressure is only a risk factor for developing glaucoma. You can have elevated pressure and not have glaucoma; conversely you can have low pressures and actually have glaucoma . However it is common to have elevated eye pressure with glaucoma.