I think I could be pregnant....what do you think?

First of all my period was a day late last month and I am usually on time all the time. Well, anyway I was tracking when I could possibly ovulate again because me and my husband don't use birth control. It showed that I should ovulate on Monday but we had sex on Sunday and we use the pull out method anyway, after having sex I had really bad menstrual type cramps could this be a sign that I might be pregnant? Then later that night I had cold sweats and a serious headache for the rest of the night. Do you think that I might be pregnant?

me and my boyfriend had sex wit a condom when i first started my period than we had unprotected sex twice while i was bleeding but we didnt know i was bleeding till we finished,he didnt cum in me,he pulled out but i wanted 2 know,whats the possibility of me bein pregnant