i would say its normal to feel tired but prob not dizzy, i would still mention it to the doc just to be safe, you could have an infection that needs sorting!
im completely dyin with the cold......ther is just not enough hot lemon in the world is curing this!
Sorry to hear your feeling poorly. Ive been exactly the same...it rubbish you cant take anything for it. Have you tried putting honey with your lemon? Apparently it has a natural antibacterial type thing in it which kill off bugs. Menuka honey is the best, but most expensive. Ive been having that with halls soothers and lockets etc. The odd paracetamol when Ive felt really rubbish.
Hope you feel better soon x