Hi.
Thanks for joining me on ehealthforum.
The irregularity of the periods until now could be due to that fact is that you were having anovulatory cycles (without egg release from the ovary).
It is not necessary to have PMS each time you have your periods. Wait for your next periods and see how they are. If they continue to be like this one, then it would mean that you have shifted to having ovulatory cycles (with egg release from ovaries) which are regular.
Get your symptoms discussed with your healthcare provider/gynecologist, and go ahead with examination and investigations (ultrasound scan, blood tests and hormonal tests) to find out the cause for them. Start with treatment if indicated by the test results.
Take care.