Low progesterone levels at 4 weeks

Claudia • Mummy to William James 8th March 2015
Hi had my first blood test from my doctor which was almost exactly 4 weeks of pregnancy. So very early and they told me that my progesterone levels were low at 3. I have had another blood test to see whether 5 days on it has raised. 
​Is this normal?
​My doctor was very unhelpful, I was told this initial news over the phone which obviously upset me. Then I was in with the doctor who did not explain anything to me, leaving me to google. 
​I have had the positive pregnancy test, I have had symptoms of pregnancy, and still not had a period. My doctor said that there was nothing they could do and to prepare for the worst if they have not raised. Not something you want to hear. 
​I would really appreciate some thoughts or any tips that anyone can think of. 
​I don't want to loose another baby and I have everything crossed that they have raised. 
​Was the blood test to early?
​Please help I am trying not to stress as that is worse for the baby, but I can't help it.