If you are feeling weak and unwell as well, I certainly would NOT be going for a run!!!
It sounds like your body is trying to get over whatever it was that was plaguing it, and to do that it needs the energy to focus on that. MAYBE going for a little walk would be o.k.
As far as the tiredness etc. is concerned, apart from having not been well, what is your eating like? Are you getting good quality food and a variety of it? Ensure that you are getting a good mix of good protein (not from processed meats, etc.) and that you are getting plenty of fruit/veges into the mix. Also, ensure that you keep yourself well hydrated!
I went to have a peak at your nutrition tracker to see if there was anything there that could be tweaked to help you, but either you don't use it, or you don't share it. If you DO use it, then if you open it, even for a little while, so that we can see what is going on, you will perhaps get some better input.
Take care, and remember, look after yourself!
| current weight: 151.0