Missed Pill, chances of being pregnant?

[CMirren17]

I've been taking the Mini Pill, but for four consecutive days have missed them, and have had unprotected sex during that time.Days later I've been displaying some symptoms, nausea, back ache, cramps and mood swings. But was thinking that it was PMS? but, with taking the pill it has stopped periods so I'm unable to rely on that. So is there a chance of being pregnant?

Of course you could be pregnant

Yes, there is a definite chance. You should take a test 14 days after unprotected sex.

I've just got pregnant whilst on the pill and I didn't miss any - I'd say there is always a chance

Definitely a chance, I recently conceived on the pill as did my Mum with all 3 of her children!