Pms but no AF

Hi, hope you're doing well.

Last Mei, I took pill. On March n April, my period decided not to come and I don't know why (never experience this before but maybe because I put weight a lil bit) So, my Dr gave me the pill to make my period come. After finished one strip, I stopped it.

June, July August and September my period come like clock work. 28-30 days of cycle.

On October which is today, I am late for 7 days. I had cramps like AF is coming, very sore breast, flu last two weeks and minor dizziness sometimes. I also had vaginal discharge

not very thick and pelvic pain that come and go.

Can anyone tell me what is going on? Just want to know if anyone has experienced this before.

Thanks in advance.