Miscarriage or an unusual cycle?

As doctor instructed I took clomid 100mg and I got a missed period which made my cycle goes till 36 days without any sign of a period(ie: yesterday)

I had breast pain from couple of days, no cramps, food craving, frequent peeing and slight headache until yesterday.

I didn’t take a pregnancy test thinking I would check after 1.5 weeks of missed period but yesterday eve (after 6days of late period - my avg cycle is 29 days) period commenced at once whereas I never had a sign of coming it.

It started slightly and became heavy until now passing red clots and a heavy blood steam. I was in a huge pain yesterday with cramps and stomach and back pains.

I am feeling sick today too and lost the appetite already.

My maximum cycle was 32 days and I never had this much long cycle happened.

Can this be an early miscarriage?

Or another unusual cycle?