i am simular to you had 3 boys within 4 years, just fell preg looking at dh !, but aft have 3 so close he had vasectomy.
well this year we decided we want to have another baby, good if it was a girl but happy anyway.
well i've been told have to do icis and we both have app in 3 weeks and prob do first cylcle in april or may.
it's a bit strange and scary but better then reversal which isn't guarenteed
how's it going for you

boys now 5 ,7 and 9
me 36 dh 45