Positive OPK first cycle what next?

Nicole
Hi Everyone
This is our first month TTC so just want to make sure I'm doing it right. I've been taking OPKs everyday and today is the first positive, so if I've read correctly we BD tonight, Friday, Saturday, skip Sunday then BD Monday?
I was a bit confused as glow says I've had all week in fertile green but it's only just shown up today and when we BD on Saturday and Monday it will be a White normal day not green?
Hoping I haven't messed it up this month :(
Thanks
Nicole x