just curious help?

I'm so confused I'm so tired for like the past week and a half to two weeks all I want to do is sleep, I thought I might be pregnant as we are ttc but took a test and it was - and the next day I started my period like normal but it only lasted three days (normally 7) and now it's like just folding clothes wears me out. I'm not on any meds, have been waking up sweating at night and like last night I slept for 11 hours and I'm still exhausted. Help please???