My period is late again could I be pregnant?

The last time I was late it stared the 6th of feb 2010 and didn't get it till the 22nd of april I thought I was pregnant. Now its June 3rd and no period since the 22nd of April could I be pregnant? I feel from time to time some cramps or a bit of abdominal pain but no period. my boyfriend and I used with-drawl as bc I know its not a good bc. Any suggestions besides telling me to go to the doc or take a hpt?