I missed my period it's already 8 days late and I have an ovarian cyst which is too small more over yesterday I ate out food today I got loosemtion and bad gas and stomach pain. I took a pregnancy test it's negative my last month start date is 25 end date is 29 of period usually I get 5 days back of my starting period should I take a beta hcg test I took tablet loosemtion stopped but. Having bad gas and stomach ace.