I want to ask my gf to marry me..too soon?

I am 38 years old and my girlfriend is 32. We have known each other for 8 years but only been dating for 10 months. We were really good friends, dated casually but kind of lost touch then reconnected last year when I heard her father died. We have been inseparable. She moved in back in November. Things are great. We get along, never fight and talk about our future together all the time. I have dated a lot of girls thru the years and she is prob the most loyal and trustworthy one of them all. She is an open book and I never have to question her integrity.

I am ready to pop question and bought the engagement ring today. I feel like I’ll wait about a month just because I don’t wanna ask around Valentine’s Day (too lame). My family loves her and is on board, it feels like all systems are a go here. I’m not worried about her saying yes, she told me I could ask tomorrow and she would say yes so it’s not about that. We have had the convo a few times. Just thought I would post here and get some opinions, anyone think 10 months is too soon?

Edit: I also wanna say she is dealing with this large uterine fibroid right now, she has to have surgery next month in a big city with a specialist to try and save her uterus. They won’t know if they can till they get in there to take it out. She could have to have a hysterectomy and she is terrified I will leave her. She’s really going through a lot and it pains me to see her like this. I told her I’m in it for life I love her, but she is still worried I’ll leave her if we can’t have kids so I was thinking it would be a good way to show her that hey, I’m not going anywhere and in fact I want you to be my wife.