I recently switched birth controls, from Loestrin 24 fe to Lo Loestrin. I missed my period this month and am concerned. I have protected sex, although during four play we have started without a condom for a no more than a minute or so. Could I be pregnant? Another issue relative is that about a month ago I randomly started having stomach pains, gas and bloating. It went away but has returned and basically is adding fuel to the fire of me possibly thinking pregnant? Please help! I am absolutely not ready for this and need to know!