Pulling out

I’ve been a little on edge for two days , my man is usually always perfect on pulling out and we’ve never had problems in the past before but one time recently he wasn’t sure if he pulled out quick enough ... he said he thinks he almost did and it might’ve just been the tip that was still in or he might’ve just got the outer edges. I of course cleaned up extremely good because of course this was the first time we have had a problem like that . I’m supposed to be getting my period in about 4 days and he is also concerned about did he really pull out in time . just wondering if anyone has advice or any comments about is this a chance of it could lead to pregnancy. Thanks !