Yes- You took it the same way I did when my doctor told me no sex for 8 weeks. I automatically assumed that I would be physically able. But that was not the case. It took me over a year. Now at 2 years+ I can again have decent sex. As many have said, you are still too early compared to how most guys recover from ED after RP. Don't get depressed though; that only makes ED worse. Relax and good luck.
Bill K. from NJ
Age 58, PSA 3.3, free PSA 21%, 1/12cores+, 30% Gleason 3+4, normal DRE.
daVinci 7/2011, Downgraded Gleason 6, contained, 67 grams, 10% involved
P2c, immediate urinary control, but 100% ED for 13 months.
Used VED, Bimix, 5 mg Cialis. "Natural" intercouse at 15 months.
Now at age 60, can have sex without drugs. Libido much lower though.