Without really knowing your current fitness and exercise history, it's not easy to be sure - but my gut feel from what you're saying is that you're overloading.
5k in 25mins is a very decent pace, even for someone who's fit. You also ran the day before, hen you've thrown football in immediately afterwards and you're doing a couple of HIIT sessions during the week too.
I run 4-5 times a week and I'd rarely train at sub 25 minute 5k pace, unless it was a dedicated session to work on faster pacing. Normally, I'd be running 30mins+ for 5k (which for me is quite an easy pace, see conversation suggestions above) so that my weekly load is manageable. If I was throwing football plus HIIT sessions into my plan, my running pace would have to drop even more to account for the total load. If you're not used to running (and getting other high intensity efforts elsewhere), it's even more important to do vast majority of your running at a slow pace.
5k in 25mins is a very decent pace, even for someone who's fit. You also ran the day before, hen you've thrown football in immediately afterwards and you're doing a couple of HIIT sessions during the week too.
I run 4-5 times a week and I'd rarely train at sub 25 minute 5k pace, unless it was a dedicated session to work on faster pacing. Normally, I'd be running 30mins+ for 5k (which for me is quite an easy pace, see conversation suggestions above) so that my weekly load is manageable. If I was throwing football plus HIIT sessions into my plan, my running pace would have to drop even more to account for the total load. If you're not used to running (and getting other high intensity efforts elsewhere), it's even more important to do vast majority of your running at a slow pace.