17 year old DD no period for 4 months

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My 17 year old DD hasn't had a period for 4 months, she is not pregnant.

After she had her 1st covid jab they stopped for 5 months. She then bled non stop for months and GP put her on the pill. She hasn't had anymore COVID jabs since the first.

She stopped the pill over 8 months ago, had a few periods and now they've stopped again for 4 months. She's not underweight, no eating disorders etc. Should she see her GP or just keep waiting to see if they start up again.

I was like that at that age. Diagnosed with pcos at 20. No other symptoms.

Is she a keen/elite athlete?

Yeah, I was like this, sometimes I’d be lucky if I had 2 periods in a year.
PCOS no other symptoms at that age other than the periods.

Are you absolutely sure she's eating properly? My niece had an eating disorder and was a pro at hiding it. Is she stressed at school or friend/boyfriend troubles? Sounds like she needs gp and bloods. Good luck 🤞🏼

Worth getting it checked out, DD has just been diagnosed with an auto immune condition because the GP arranged a series of blood tests etc for an unrelated (minor) symptom...

I'd definitely get it checked out. Could be pcos. What's her weight like is she underweight?

I think it's unlikely that the covid jab has caused this and I'd absolutely be taking her back for further investigation to find the underlying cause. As others have said it could be stress etc or pcos if the latter, better its identified early. Womens menstrual health matters are notoriously under diagnosed so be prepared to push.

You might want to push for a link to the vaccine. I know of several young girls who have experienced this, but have been fobbed off. The link is known and info can be found online.

She's normal weight, size 10, she goes to dance college so dances all day. But definitely not underweight.

She had the covid vaccine when they first came out, so I'd be surprised if that was still causing issues. Must be over three years since she had it.

I was thinking PCOS to, as I think I have it, although undiagnosed.

I'll get her booked into GP next week.

From what I've read online the link to menstrual changes is only a temporary and minimal disruption- certainly not to the extent ops dd seems to be experiencing, seemed to be more like periods extending for a day type of an impact than vanishing completely for months.

My worry would just be that given that womens health is under diagnosed, blaming it on the vaccine or pushing for that before all other causes are ruled out could result in a 'lazy' diagnosis when conditions such as pcos need to be identified and managed where possible early on. I would want a thorough investigation.