Miscarriage ???

It’s Saturday... on Monday afternoon I took a dollar store pregnancy test, it was a positive but somewhat faint. I take the same test the next morning. Same results. I go and pick up the clear blue tests that say pregnant or not pregnant. Take one right when I get home

Pregnant.

Next morning (Wednesday): pregnant.

Friday: Urine sample at clinic: Negative

Back to the lab for blood test

HCG: 18

Friday evening I get light pink spotting. Later it turns more brown.

Today (Saturday): the color’s getting more red I guess you could say.. little heavier.

All week I’ve had lower back pain. Sharp pains inside my vagina and lower abdomen. When I sneeze or cough I get really sharp, tight pain in lower abdomen.

Curious if anyone had any similar experiences with pregnancy or miscarriage? I’m Rh- but have had two normal pregnancies.

Just need to attempt to ease my mind, if it’s possible. I’m due back Monday evening after work for another blood test but I feel like it’s forever away and I’m going nuts thinking about it 😫