Can i be pregnant ?

So i switched birth controls after a month of taking a knock off brand of my usual but i wanted to take a break from birth control for a couple of weeks i ended up having sexual after a 4 day period and a couple days after I’ve been experiencing back pain , i don’t have a taste in food anymore and my nipples have been hurting for a week now but this week is ovulation week and today is supposedly my ovulation day and It would be about 8-10 days since I’ve had unprotected sex