i am 20 years old and i have been having irregular periods since jan2010 due to stopping to depo provera injection. my last two periods were reguar and lasted 3-5days. today i have had heavy bleeding 2 weeks after my last period ended. i ave mild stomache cramps and nausea. we have been trying to conceive since january and still no luck. im scared tere might be something wrong.. PLEASE HELPP..!