Advice????? Anyone else experience this ?

I am trying to get pregnant. I tried on May 25 and May 30.

Last week I saw my doctor and she went ahead and did a blood preg test which came back " not positive " but " not negative " I'm not sure what that meant.

I was expecting to start my period 3 days ago, still nothing. I never start on the same day because I just got my periods regulated again 3 months ago.

I have taken at least 4 home preg test and they all say negative.

I feel so sick, naseated. I have been for days now and my head hurts.

I'm really trying not to " make myself feel pregnant "

Can anyone relate? What is going on with my body?