You could have conceived on the day you ovulated or a few days before.
Even though I'm seven weeks ?
Ahh, sorry I just realized you said February lol. In that case is doesn't make any sense. I would go by your last period unless they're irregular. You usually ovulate around 2 weeks after your period.
Go to google and type pregnancy calculator and go to about.pregnancy and it will tell you. (:
So women ovulate differently, no two women are the same. We're like special snowflakes ;)
No women i meant to say...**