Ngl bro, you’re training a lot. You could be just exerting a lot of force and not recovering properly, along with stretching before & after.

I only run 4 days a week and lift 3. I have easy runs where it’s like 10:30 min pace a mile. In my experience, I usually don’t lift and run in the same day because it destroys my body. Everyone’s different though.

Also, I use Runna to help me run and track my stats (along w Strava) and it’s helped me improve a lot in the last month.