Feel Like Crap Day after hCG?

I’ve noticed a pattern with injecting hCG. The next day, I usually feel like absolute crap. Very lethargic and also a bit down emotionally (which is not the norm for me).

It’s not really like high E2 (I’ve experienced that, and it’s different, and mine is under control). Just curious if anyone has these symptoms or any ideas about it. I’m going to try a different brand of hCG to see if it makes any difference.