Can I use an SD card in my Macbook Pro?

I have a new Macbook Pro i7. I'm not seeing a slot for my SD card (used in a Nikon dslr) All I see is a express card slot. I'm going from a PC to a Mac, so this is all new to me. Can I use an SD card in my Macbook?

Added (1). I see a large slot on the left side of the computer, past all of the usb ports. The slot is quite large. I inserted the SD card (it seems there's a magnetic pull inside the slot) but the card is much smaller than the slot, so I'm hesitant to stick the card all the way in.

Its one built it its on the left side of the ports its the last one on the side yes

There isn't one to the right of the USB drives? If there isn't, could be one in front of your mouse pad. If you've checked every possible place on the computer, maybe you just need to get a SD card reader.