Pregnant??? Please answer

I’ve been taking the pill for a year and had sex on April 6th, we used a condom and I took the pills as usual during the whole month. But I wasn’t able to buy them on May so I didn’t take them, the thing is I didn’t have my period. I should have had it on the last days of April and, following my pill cycle, on the last days of May, but I started taking the pill again.

Could I be pregnant? I’ve also been experiencing what seems like cramping