Lite period 😫 ADVICE !!!

So ladies when my period started being lite was May 26th it lasted shortly like 4.5 days .. usually my periods are medium the first day lite then the next day it fills up my pad.. just recently my period came June 30th and was so lite that if I wanted to wear a panty liner I could .. now that I'm on the 5th day it's just a dot .. normally my periods are 5-6 days long and around the 5th day it's just brown blood .. recently in February I was having a lot of abdominal pain so they gave me a ultrasound to check my cervix .. come to find out I had a cyst on my right ovary 2.5 cm.. then I had a follow up with my primary doctor which told me that cyst aren't something to worry about and they disappear on their own ... but ever since I found out I had them from February to April my periods were heavy .. but then in May it was extremely lite with spotting in between ovulation in early June .. I'm worried is this happening to anyone else ?? And I'm not on birth control!!! I'm not even sure if my period is regular anymore 😢