pregnant or no?

okay here's my thing. I have been taking Yasmin for a year alreayd, but my prescription ran out in may. so for a whole month i didn't ahve the pill. WIth the pill you are supposed to start it the sunday after you start your period so I starting taking it last sunday since I started my period last friday.
I am usually only 2 days with spotting on the third, but this time it was a heavy flow and i was done by the third day as usual. Last week me and my boyfriend did have sex quite a number of times, but since I am on the pill again nothing was the matter.

These past two mornings I have felt really nausiated and so drained even though I've been going to bed pretty early. and this morning i started spotting. Is it because of me starting the pill again or can I be pregnant?

i feel even sicker right now at im at work.