How long did you date SO before getting engaged?

I have a 1 year old and have been with my BF for about 5 months. He’s absolutely wonderful and everything I’ve ever dreamed of. Plus he’s an amazing dad to my daughter as her biological dad isn’t in her life. Well I found the receipt and bag to a jeweler where I believe my bf bought an engagement ring. Obviously I want to marry him but I’m worried people will think bad of us if we get engaged so soon