can someone please give me some advice

Ashley

Hello,I have been trying for 5 years to conceive. I received my BFP Sunday and and have tested ever say since. I also went to the Dr for a blood test and she said my HCG levels were low at a 43 I am 4 weeks today. Does anyone know what their HCG levels were at 4 weeks? Also I have been having a dull ache in my back and some mild cramping but no bleeding.