2000 iu HCG per week will spike your estrogen, common side effects are also, anxiety, irritability, acne, mood swings, irritability, restlessness, fatigue, hair loss, fluid retention and irritation in the area of use.
The recommended dose 250-350 iu twice per week. So you're taking 8 times the recommended dose.
And thats why you feel like shit. You should also have started HCG with your first injection of test.
If you gonna ignore common sense and run 8 times the dose for the remainder of your cycle you will have to adjust your AI doses.