Should I ask for blood tests?

I am almost two weeks late. Have never been this late in my life, not even when getting off BC. Granted since then I was told that we would never have kids naturally, but I'm having the following symptoms:

Period like cramps, but no period. This has been for the better part of a week now.

Creamy white discharge, for the last two weeks.

Sore nipples.

Sore and at times, burning stomach.

Feeling unwell, like a bit nauseous but nothing major really.

I have taken three pregnancy tests, including one this morning, but they are all negative. However, as an important note - I had a miscarriage several years ago and I had my HCG levels confirmed via blood test at the hospital. This was before my period was due so I hadn't tested with a hpt, my levels were 142mIU so definitely would have been detected on a test. However, when I got home I went to take a hpt and it was negative. This was about two hours after the bloods were conducted so it should have been positive.

Should I ask for blood tests or just wait it out until I am formally past the two week mark?