this might be it.!

Brandall • Always live the life you dream of!
So this might be it. I'm 4 days late on my period, and I've been having slight cramping on my right side, I've been sleeping A LOT! I've been having severe mood swings (lol my boyfriend is kind of scared of me right now) but I don't know when the right time to test is.. any advice?? 
I took a test but it had come out negative, my mom said that it's completely normal, and that maybe I haven't produced enough hcg yet. She said that she didn't produce enough hcg until she was four months pregnant with me. And I've been having major symptoms, so we're getting a blood test done soon.