Scared I might be pregnant again

So basically I got pregnant on the pill in December, unplanned. I suffer a miscarriage in early December witch was sad since I had thought about keeping the baby. Then fast forward to ten days ago the condom broke twice in one weekend . When I went to buy plan b they would not sell it to me ( I live in Germany and you have to answer a questioner before they can sell it to you since I had a miscarriage I had to wait to see my dr ) then it was to late for even Ella one . Now I fear i might be pregnant my period is still a few days away . My boyfriend won’t talk about it but I’m seriously concerned. Am I not right to be?