Pregnant???

A month ago on July 1st I had unprotected sex but I still got my period about a day or two after but it didn't last as long as it usually does which is about 4-5 days it instead lasted 2 days almost 3. I get my period mostly always the 3rd or the 4th but the 7th the latest. However I had unprotected sex again the 7th of this month and I haven't gotten my period yet. I usually get major cramps before my period but I haven't gotten them. Ive been really fatigued lately, each time I think my period is coming, it's just a lot of discharge, I get cramps but they're not painful, they're light and they don't last very long. Could I be pregnant because the times I've had sex and the time I'm supposed to recieve my period don't match up. Should I still take a test?