I had something similar happen a couple months ago. Was in the upper quad muscle (top or the sartorious area). Think it was just a strain and everything was fine a week or so later.
As you up the tren, you'll see the cosmetic effect more. 200-300 it's a very noticeable look when lean. 400-500 I feel is where it "maxes out" so to speak in the way it makes you look. Though the difference between 300-400 is minimal. I don't really see much need to go over 50-75/day of ace.So now after playing around with tren a couple times, I really do feel like 500mg DHB is just as good as 175mg tren. I am saying this not having taken tren above 4 weeks, so I dont know that I'm not gonna turn a corner still, but it is ace so I'd think it would be at full speed by now. Granted, I have no clue how good my tren actually is. But just in terms of cosmetic effects, at that dose tren hasn't really done anything mindblowing that DHB and an oral couldn't.