Hi Ciara
Firstly, I am sorry for your losses. Miscarriage is awful thing to go through
I think HPT are quite accurate - a line is a line, positive! If you are worries definately get bloods done. Urine is not the best indicator of HCG. It can also vary depending on your fluid intake. For exmaple, in the past perhaps you didn't drink as much on the day etc. It has been hot so your fluid intake is most likely higher etc. There are many factors. I think it sounds positive - you have other symptoms too. It is so hard when you just need to know! BT will save your sanity - I wish you all the very best!
Also, with DS I never really got a heaps dark HPT. Definately not as strong as control line - quite faint and thin - yet here we have a healthy little boy
Goodluck hun
Rach xx