Pregnant possibility??

My boyfriend and I use condoms as our form of birth control. Well earlier this month, we happened to have a condom break. :/ I immediately got up and washed it all out. The semen was on the outside luckily none of it got in me that I know of. Well, I just got my period yesterday and i spiked a fever, chills raging headache, stomach pain... What are the chances I could be pregnant?