I had my flu injection last week and the nurse asked if Iv been unwell and I said yes I have a cold! She asked if Iv been feeling feverish and I said no just a runny and blocked nose so she said it was fine for me to still have my flu injection. So the last two days my nose is extremely blocked my throat is very sore and I have an awful cough too!! This morning I have woke up feeling very cold..... is it possible for that flu injection to make a cold worse?