If it's a head gasket issue etc, it'll not be long till you are no longer wondering what it is. They can weep a bit for a while almost unnoticed, but then you'll start to notice some or all of the following poor starting, miss fires, badly emulsified oil, coolant level dropping or stinking of petrol etc etc.
I doubt if you have an issue.
Don't forget if you are changing the oil, get the bike warmed up, thin oil drains much much better.
Stop worrying.