[Gingerbread Latte]

You could be pregnant but I think there's a good chance that you aren't. You said you finished your period the day before, on a normal cycle you wouldn't ovulate until about 7ish days after your period so if your cycle was normal then there shouldn't have been an egg there for the sperm to fertilise.
However, I still think you should wait a few weeks and then take a pregnancy test.

Also, you should maybe think about going on the pill or another form of contraception so you have extra protection if the condom splits again.