You should just try to control the gyno with. Nolva first instead of hopping full on to clomid and nolva.
How do you know it's gyno?
It's very common for nipples to get puffy, itchy, and sensitive while on compounds. Doesn't mean you're getting gyno though.
I would take nolva 10mg e3d for a week while still taking epi and stop the clomid.
If it really is a full hard painful mass devloping use nolva 20mg eod for a week and evaluate from there. It's still very early and easily reversible.