I had my booster on Wednesday (it's early Friday morning now). I had a mild cold when I had it which may have been foolish but I feel really rough and feel like my sense of smell has changed. It's more than in a cold way but who knows. My question is, will the fact that I have had my booster now mean I have covid in my system and give a positive PCR when I actually just have a cold? I have been in a bit of contact with someone who tested positive but not long enough to be classed as a close contact