You don't need any test products (boosters etc) at all. 200mg is not TRT (for most people)... your test is high enough. Your estrogen has probably risen over the last 6 months. You need to get blood work done (test, free test, estrogen, prolactin, cortisol etc). Tadalafil/Cialis is an amazing product but you don't need that either. You need to sort out the root problem (most likely e2 related). I would start a small dose of aromasin (10-12.5mg per day). But you need blood work to fully know what is going wrong.
I should add the type of guy to start a thread like this with lots of !!! in the title is probably the type to worry and hormones are always gonna do this to guys like that.
Why have you ran 200mg for 6 months? I assume it is self prescribed? Have you been to a doctor about this?