Sorry, I meant to say...it's unlikely that you're pregnant if you had a normal period after you had sex for the last time, but if you've had sex since then you could be pregnant. No form of birth control (even combined) is 100% effective.
Stomach pain, nausea, and a strong smelling urine can all be indications of a bladder or UT infection. These can be caused by all sorts of things, including simply the act of having sex (the man's penis rubs on the ureter opening and the bacteria backs up, causing an infection). Infections can delay your period if your body is sensitive enough.
What protection did you use? I conceived while taking birth control pills that I had been taking for years (properly taking). It IS possible to have bleeding that mimics a period in timing and duration during early pregnancy but it's unlikely that you are pregnant if you had a normal period in april...I would go get checked for a UTI.
Oh yeahh ! my period is usually regular. & i should have started my period on sunday , but it's tuesday !
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