I would wait a few days after ovulation to be sure that you really ovulated. (For example, if you are temping, 3 days of rising temps is considered confirmation of ovulation. If you aren't temping, I'd give it about 5 days just to be sure.) Because KY and other lube can/will kill sperm which is not very helpful if there might still be an egg around for them to catch. After that, it's fine to use whatever.
Me (29) DH (30)
#1-Olivia Caetlyn-9-28-09-9-28-09, 23+2 wks, emergency classic c-section, class I HELLP, IUGR
#2- Lucas Oliver (rainbow baby)- April 2011, 36+2 wks, HELLP and pre-e free! (lovenox and LDA pregnancy)
#3-Matthew, late October 2012...mostly normal, 37 wks, (lovenox and LDA again)
My blog: http://www.butterflies-and-rainbows.blogspot.com/