I need some insight from you all...

8th: positive pregnancy test

9th: positive pregnancy test

10th: positive pregnancy test

11th: positive pregnancy test, started lightly spotting, brown

13th: positive pregnancy test, light spotting, brown blood

14th: Brown light spotting turned red and heavier for only a minute or so then went back to brown and light spotting. Painful twinges on lower left stomach on and off for about 30 minutes later that day.

15th: positive pregnancy test, dark lines. lower stomach and lower back cramps, still lightly spotting brown blood

16th: lower back pain, still lightly spotting brown blood

I have an appointment tomorrow.

This is my fourth pregnancy (I had a miscarriage last month) and ive never experienced any of this before (I did spot for a few days before heavily bleeding when I miscarried) I had no symptoms at all with my first two.

Are any of you experiencing this same thing? I will bring it all up at my doctors appointment tomorrow, but I wanted to get some insight from you all.