i need help. does anyone ovulate toward the end of the month

so I have my period from the 4th to the 9th every month, and I tend to ovulate toward the end of the month 19-26. we tried conceiving almost every one of those days.. now this month I haven't had my period I was supposed to start the 4th and its now the 10th. I took about 5 pregnancy test 2 first responses and 3 from the 99¢ store ( which I hear work just the same) all NEGATIVE.... 😣😣 so now I'm wondering what's going on? is there a chance I can still be prego? another thing is I have no symptoms except a few cramps when I was supposed to start my cycle. does my ovulation period effect the results coming back to me?