Pregnant?

So, about 5 DPO I was cramping for about 5 days straight. After that for about 3 days, my nipples were really sore and sensitive. Just nipples. My AF was supposed to come yesterday. I finally took two tests today, both an hour apart and got veeeerrry faint results. I'll be twenty next month, I've never been pregnant, but the only thing I feel are cramps just like all week. I need help!