my husband and i just had sex.we are not trying but also not doing any prevention.

(we never have and well 2 year no baby soo our plans have worked so far XD)

my question is this

when we had sex yesterday i swear to goodness it felt (for like the first time ever) like my cervix actually opened up when he came.. im not worried as ive stated 2 years no condoms no birth control. only one pregnancy (that ended before we could go to a dr to get a test done) and thay was at the beginning of our relationship 2 yrs ago lol.

so is it possible to actually feel your cervix open during sex? or am i just crazy?