Missed pills!!!

sorry wasn't sure where to post. 

I am on ridgvidon contraceptive pill. I have missed Sunday and Tuesday's pills in my third week. (This week)  We have not had sex everyday but now and then throughout the month. I took my last pill today of the pack as normal. My bleed would be coming this Saturday. Am I at a high risk of getting pregnant? If so when should I do a test? 

Ive been getting tummy cramps, could this be my period on its way? 

Thanks. Excuse any misspelling on phone.