Late period!!! Help!!

I have two period tracking apps. This one says I should have gotten it on the 25th n the other says the 26th. Still haven't gotten it. But before my period was due I had cramping n a day of light bleeding on Feb 16th, which was about 10 days before I was even sure to get it. Then on the 1st I had spotting. The amount all day would have been less than half of a tampon. Could I be pregnant??? Help please!!!