So I've been on birth control pills for about 2 years now but for the past few months I haven't been taking my monthly break so I don't get my withdrawl bleeding however because I haven't been taking these breaks I am wondering how I would know if I'm pregnant or not. I haven't had many symptoms but I have felt quite nauseated, not been physically sick however and I have also had mood swings as well but I also suspect the pill in general could cause this. In conclusion my question is, basically how would I know I'm pregnant if I don't even get a period?