I didn't get pregnant last 4 times. I met a doctor in late October and did the scan. In scan it was found that I ovulated on 22nd or 23rd oct and I had intercourse during that time. The period has not come till today and did a pregnancy test which came up negative. I don't have any specific symptoms to put down. Any chance I can be pregnant.

You ovulated and had sex. So.. yes. Good chance.

You're going to need to wait until you miss your period to know for sure though. Two weeks after the start of your next period is the date you want to circle to do a home pregnancy test. If you don't get your period that is.