Could I become pregnant ?

So last month in May my boyfriend cummed in me and two days later I took a plan b. And i just had my period on the 7th and on the 22nd I started to bleed I was thinking because of the plan b. Well I haven’t gotten my period yet. I took a pregnancy test and it came back negative. But a week ago my boyfriend cummed in me again and I didn’t take a plan b. I wanted to know if I still got my period this month is there any chance I can still become pregnant next month since I didn’t take a plan b the second time. ( please no rude comments) thank you 😊