MY PERIOD IS KINDA LATE. Kind of scared I might be pregnant

I'm on the Nortrel 1/35 tablets I just recently started a little over a month ago. I was on the Xulane patches before but they made me constantly bleed so I switched contraception. My period is about 2 almost 3 weeks late. My boyfriend and I don't use condoms. I usually take my pills religiously. I've been having sore breasts , and cramps but they're way lighter than the cramps I get when I'm about to get my period. I've also had an increased appetite. I took a pregnancy test and its result was negative. I've been pregnant once before and the symptoms were all there, especially morning sickness. But the symptoms I've been having are different and I don't know what to do at this point seeing that my test resulted negative.