Is it a cold or allergies?? How to tell?

My guess is that it's allergies. Since it's really only affecting you before you go to sleep and in the morning it could be something in the bedroom. Feather pillows or blankets, pets sleeping in the room, or even dust could be the cause. I would suggest that you wash your pillow cases and blankets, dust around the room, and vacuum. Especially if you have pets. Try that first, and if that doesn't help then try taking an anti-histamine before bed and see if that helps. This will block the histamine receptors so that any allergic reactions will hopefully be prevented, so you won't get the runny nose and sneezing and red watery eyes.