Could I be pregnant?

Hi, yesterday my boyfriend and I had sex with a condom, and when he came he didn't pull out for another 30 seconds or so after, but he said it felt a little weird when he took it off after, like it kind of felt more stretchy?3 He flushed it before he thought of checking it. It's a different brand from what we've normally used, and we didn't hear or see any breaks or rips.
 I've also been on birth control for a little over three weeks now, and have been taking it on time with the exception of 3hours late one day in week 1 and an hour late last week. Is this okay?
What are the chances that I could be pregnant? I've been feeling a little anxious because neither him or I are sure if the condom broke. 
Thanks

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors