@obeabdabother congratulations!
@garlictwist there's a few different side effects being experienced, it's not just delayed periods. For example, I've experienced stop/start bleeding with extremely painful cramping and clots. Some women have reported heavy bleeding lasting weeks after getting vaccinated.
Regarding the pill, it's possible you're experiencing a side effect from getting vaccinated. A good way to consider this is the impact on women with hormonal IUDs e.g. the mirena coil which can stop periods and has similar hormones to the pill. Many women with the mirena have reported abnormal bleeding since getting jabbed.
One example reported is here. "When Katy Fyksen got a heavy period a few days after she received her second dose of the Moderna COVID-19 vaccine, she didn’t consider there might be a link.
The 43-year-old Plainfield woman hadn’t had a period in over a year and a half because of her Mirena IUD, so the sudden red flow was a surprise. But she didn’t think about the timing in relation to when she received her vaccine until she saw a Twitter thread."
In a Zoe article shared on here recently, Professor. Emma Duncan was dismissive about side effects reported by women on the pill. "Those taking oral contraceptives, a typically good indicator and regulator of the menstrual cycle, have also reported irregular bleeding. Emma explains “that the most common reason for women on oral contraceptives to have breakthrough bleeding is unreliable absorption of the pill (from forgetting to take it to diarrhoea to antibiotic use). Given that about 1% of women fall pregnant on the pill every year, this is not unusual.”
You know what's normal for your body- if there have been no other changes that would affect the pill, it's probably the vaccine and worth reporting.