Advice please. I am worried.

Reason why I’m freaking out...

When I was 19 I miscarried before fully realising I was pregnant. I passed a large white clump of tissue which was followed by black rotten smelling blood and a womb infection. Diagnosis was 80% likely to be a miscarriage. And after having missed a period and the heavy bleeding I had. I was heart broken and miserable for a long long time.

Now I’m 25, and have a 14 month old baby girl.

I have recently had 55 day cycle. My period being 22 days late. I took a test at 19 days late and it was negative.

I had been ill the week before and shrugged it off.

But my period being absent was a concern.

6 days ago I began to spot brown blood and I am still spotting brown and occasionally pink blood. But I’ve had a sudden intense shift of pain this last 24 hours of intense nausea and pelvic pain, lower back pain and even pain in my hips. I’ve lost weight this week and generally feel unwell.

There was a high chance I could have fallen pregnant and I suffer from PCOS

But my past trauma haunts me and I don’t want to rush to the doctor unnecessarily.

Any advice.