Performance Pressure

Amanda • Proud Mother and Wife to my little family
Hi all,
I need tips. Me and the hubs are ttc but a lot of the time if he feels pressured to perform or anxious... We're totally flaccid.
Which, is terribly tricky to avoid when i know my ovulation window. 
How do i ... Encourage him during my peak times without making him feel pressured?
Note - the last attempt i gave him a back rub, a little oral stimulation, we just played around and there wasnt any pressure talk...its just if he knows he needs to perform he gets a mental block.
Frustrating!! Anyone else go through this??