Cervix closed maybe??

Jenna • My name is Jenna and I have a 6 year old daughter; and am just now having another!💕
I was having sex with my boyfriend (tmi warning) and he said after he finished it felt different. I asked him what he meant, and please forgive me, this was his explanation, "well normally when I 'finish' it shoots out and just goes in. This time in felt firm and closed like something was blocking it" he didn't know what that meant but I think I do! Could this be it?!??