Am I pregnant?

The day my period finished me and my boyfriend had sex. The condom broke and we went and got the morning after pill straight away. The next morning I found the tip of the condom still inside. 5 days later I bled (slightly lighter than my usual flow) so I thought I was in the clear. 
Now, just over a month later I haven't received my period. Could I be pregnant? Or is it normal to miss a period?