Hello
Thanks for your query.
You are having a metropathic cycle, with irregular bleeding and spotting, with no identifiable pattern.
This sometimes occurs due to
hormonal imbalance due to intrinsic causes, or some medications .
ALso, stress, anxiety or hectic travelling/emotional upheavals cause this kind of bleeding.
Thyroid or adrenal
hormone imbalance,
polycystic ovaries etc. could be responsible.
Also,
endometriosis is known for causing such erratic spotting and cramping.
Some polyp or lesion on the cervix or in the vagina could cause such spotting.
IT is difficult to say offhand what could be the exact cause.
You need to consult a gynecologist, and go for a thorough check up, pelvic
ultrasound and appropriate blood tests as advised.
Take care.