hi i am 27 i am regular in period and it last for 3 days. usually when i get period i face problems like low back pain. from last 2 months i am facing a problem which is unusual for me. last month i got my period at regular interval and bleeding little bit heavier on 2 day night and 3rd day. which is unusal for me as my bleeding was heavier in 2 and 3 day and stop 3day n8. this month i faced same problem but after i finished my period i feel i am pregnancy symptoms. i feel nausea,lowerback pain, nipples pain,feeling tired, hungry always,feeling slleepy etc all the pregnancy symptoms. last month i got the symptoms like this but before period and stoped after period but this month still continuing. what does it mean????

thanks for all who are answering my doubt......