Sorry to hear you're feeling so bad.
About your throat, if you don't have a fever today, then you're probably over the worst of it. If the fever comes back, then I would go to the doctor. Tylenol lowers fever, (I think), so that may have done the trick
The weird AF is strange , though! If it's only spotting you could still be PG! Try another HPT in a couple of days if the witch doesn't show up. Holding thumbs for ya!