this is the first time,,,i heard about this incident,,,came out from the anus,,,thats impossible?
maybe,,,there is something left behind inside during ,,you did your activity with your partner,,and you forgot or something,,,and then when his not with you,,,you tried your own,,it happend ,,i mean there must something left over in there,,the anus after your activity with your partner
she means she never had sex, vaginal or otherwise, period.
If it's only been a couple of days, i wouldn't worry. Give it some time.
you would not having anything coming out of your anus from masterbation. you could still have some lube in your anus, or possibly an STD...did u use protection while having anal sex?
You said you never has sex before...you mean you never had anal sex before this incident or you have never had vaginal sex period?