Nauseous on 6mg dosage

I haven’t had the chance to do bloodwork so I ended up experimenting with my dosage for the past month or so. I usually inject 5mg een once a week and went up to 6 the past monthish and noticed that it made very nauseous around the time i went to sleep and would wake me up with an upset stomach too. I went back to 5mg last week and noticed everything felt like normal again, minus my mood crashing a few hours before my next injection, but its probably my levels dropping off too fast? I just wanted to make sure that my nausea is the result of high levels and i should just stick to my normal regimen of 5mg. I just got anxious after noticing my facial hair grow back at inconsistent speeds and the fact that after injecting 6mg, my growth speed up a lot that put me in this spot.