Does Missed Periods With Nausea, Frequent Urination And Weightgain Mean Pregnancy?

I had missed my birth control pills 2 weeks ago. I missed one on sunday then one on monday then i took three that teusday. I then started bleeding until about thursday. It stopped until saturday which was when i was suppossed to start my period. Then it ended on monday. so i think i missed my period. I have been having morning sickness, gaining weight, urinating alot more often. Do you think im pregnant?