I've noticed some red spots and swelling over the last few weeks on both sides and on the tip of my tongue and its getting a little bit worse?

Get checked: Without knowing more about your health and habits it's impossible to say what is causing your "glossitis." most minor things are self limited and go away in a week or two.

Not certain: This could be so many different things. This could be an allergy to things like spices, tartar-control ingredients in toothpaste, cinnamon, etc. It could also be the sign of a vitamin deficiency or other systemic conditions. I'd try to see if they are sore or worsen after eating spicy foods or after certain toothpastes/mouthwashes. It may be a good idea to have your dentist or family doc look.