Three months, no periods...

[xenolovegood]

...and four negative pregnancy tests and absolutely no pg symptoms.

I will head to the doctor for this soon but my doctor is always a bit snippy and I always feel like I'm wasting her time so I've been putting it off a bit. I've always had pretty irregular periods but never missed three in a row like this. We do use condoms and haven't really been dtd when I've been ovulating so very very slim chance of pregnancy - and I came off the pill about ten months ago so not my body adjusting to a new change.

Any ideas? Thanks

perhaps PCOS? worth a Google

That's what I was worried about just wondering if there were any alternative ideas out there. I'll book a drs appointment tomorrow then. Thanks

I was also going to suggest PCO as a possibility here. If you've always had irregular periods as well that makes that scenario even more likely.
Blood tests can be done to see what your hormone levels are like; initially you need a day 2 test to check and compare your LH level against that of FSH. LH and FSH are two important hormones as they kickstart the ovulation process; if these are awry then ovulation is affected.

If GP is unhelpful see another GP within the practice or register with another practice.