Morning all.
@usernotfound0000, I understand a lot of people have started like that, so it might be. Equally, it might not. Which is not very helpful, especially when you have to start making decisions about isolating from the family. Do you have any other symptoms?
@MrsPworkingmummy, good to hear you're feeling better. I had a better night's sleep last night - I got the humidifier out and I think that made a difference. It's such a waiting game though isn't it; I can't wait for the day when I finally go, "That's it, I'm cured." 
@AvocadoPrime, again, that may well be it. If you look back over these threads, very few people have had the traditional cough and fever, instead there's a lot of tiredness, tight chests and just not feeling quite right. I really understand your fear over if you're past the 'danger zone' though. I'm still not sure if I'm on day 14 (mild tightness in chest started then) or day 7 (symptoms worrying enough to call 111). I really hope the latter. Either way, just rest and keep an eye on things, and if they get worse phone 111 or your GP (personally, I found GP much more helpful).
Here's to continued recoveries 