Help need advice

Not sure where to post this but.... my husband had a vesectomy dec 4 we had out baby dec 15 we have not tested his sperm yet because it’s not time we had sex last night with a condom... he did not pull out and stayed in me a few minutes after.... when he pulled out condom stayed in.... was sticking out like 3 inches.... is there any way if he has sperm i could have gotten pregnant anyone had similar experience ... currently freaking out