Don't worry about bitcoin gold, it won't that much of an impact in btc as you may think. The price will go up/down (no one can be sure) no matter what happens with these forks.
The trend of selling btc to buy alt coin will continue for a long time.
You should always buy bitcoin, it's never too late to do so. But it is true what other users have said, you missed the oportunity to buy cheap, last week the price was around 5200$, and now we're about reach 6000$, so if you're going to buy, don't hesitate and do it, otherwise you might wake up one day and the price is going to be 7000$.