Of course there is I'm afraid. Missing ONE by 24 hrs means it could be ineffective and you are recommended to use another form of contraception for 7 days! You missed almost 2 weeks so you may well have ovulated.
Actually, it would be more dangerous to stop taking the pill before you know whether you are pregnant, because if you're not pregnant, you leave yourself open to conceiving while you're not on the pill.
I became pregnant whilst on the pill and was concerned about possible damage, but the midwives reassured me that there is very little chance of the foetus being damaged as long as you stop taking the pill once you know that you are pregnant.
cheesepizza, sorry to highjack your thread! i have this niggle that plays around in my head, my ds is 15weeks today, a while ago i got the minipill off my doc and started to take it straightaway, as had had no period, you are meant to take it for 7 days before its effective, on 4th day had a bit of an accident IYKWIM, now worried i might be pregnant, took a test and it was -ve, but it was negative when i checked with ds! so don't want to stop taking it, but if i'm pregnant...........
I have my DS as a result of missing the pill for 4 days in a cycle, and I had been taking it for 6 years. I went for a whole month taking it while pregnant, and was really worried about the damage done to the baby. He came out perfectly healthy, though. So yes, there is a chance.
Remember that if you have only just started taking the pill again you should be using another form of contraception for the next 7 days! So even if you carry on taking the pill make sure you use something else as well.