Hi Cherrie,
This postop time is a big hormonal shift, so it seems to me... I always felt that Spiro left something to be desired, that having the T factories removed would change a lot. So far for me, not so much. I'm returning to pre-surgery form, thankfully (my boobs disappeared when I went off E, and they're slowly reappearing now). But, thinner skin is another effect of E vs T. Possibly you've had veins that weren't as visible before? And, not knowing your age, can't guess if it's just something that appears with time...
I couldn't answer regards progesterone, or whether the product you're using is a combination of E & Progesterone - there's nothing decisive in Google
Ask your doctor...