NHS will generally do a HSG which is the older style tubal patency test - squirting iodine dye through your tubes under xray. It just looks at your tubes and I'm told is pretty uncomfortable
HyCoSy is a combination of a saline ultrasound and a tubal patency test - involves squirting saline into your uterus, which enables much clearer visualisation of the uterine cavity on pelvic ultrasound (if undergoing fertility investigations or treatment you will become very well acquainted with dildocam, as transvaginal ultrasound is affectionately nicknamed)
Then they squirt some foam up the catheter which visualises whether your tubes are open or not
I've never had a HSG to compare, but I had minimal discomfort (for about 2 secs when I had a bit of cramping) with the HyCoSy. And it's a 2 for 1.
I DID get fertility investigations done very early on and am glad I did so. I actually got them done before we started TTC, as I had a suspicion something wasn't right 'down there', as I'd never really had proper periods when I wasn't on the pill. Read about these fertility MOT things online (ovarian reserve tests ie AMH and antral follicle count) and so decided that sounded like a good idea. Found out I had PCOS - but fantastic ovarian reserve. So no rush to start TTC, but we expected to need some kind of treatment right away when we did, because we expected I wouldn't ovulate . NHS isn't interested until you've been trying for months - even if you know you haven't been ovulating and so aren't even in the game. So I went to a private gynae before coming off the pill who said we could start clomid whenever we liked - DH just had to have a semen analysis done
Ironically it was because I'd had these tests and expected NOT to ovulate, that I charted and used OPKs from the word go. And when I ovulated 2 weeks after coming off the pill alarm bells immediately rang, because for me that wasn't supposed to happen
Went to see my gynae who did a pelvic ultrasound and we discovered my PCOS seemed to have vanished along with most of my eggs
Tests all indicated that despite my fantastic ovarian reserve at 28, at 33 I appeared to be in borderline premature ovarian failure. We rushed to IVF and got pregnant on our second cycle. Sadly I miscarried - NHS won't do any investigations until you've had 3 consecutive losses, as 1 miscarriage is deemed to be 'just bad luck'. We paid for investigations privately and discovered that the embryo was chromosomally normal - ie it wasn't 'just a bad egg', there was a problem with me
We decided to therefore do another cycle with genetic testing so we could ensure we only put back a chromosomally normal embryo - and if I miscarried again, we would know the problem was definitely with the soil and not the seed.
We had a very successful third cycle and have 6 genetically perfect embryos on ice. The challenge now is to try and get the uterine environment right to give me the best chance of sustaining a pregnancy. The learnings gained from all the tests we did will hopefully give us a better chance of success
It hasn't been cheap to have tests and treatment privately, but we've identified problems much earlier than we would otherwise have done. My main issue is to do with endometrial lining, which the NHS just isn't set up to diagnose or treat, as it doesn't neatly fit into a box
Very long winded waffle, but from my own personal experience I am v v v glad we were OTT in the speed and scale of investigations. I'm pretty complex (my consultant said he's been a fertility Dr since 1992 and I'm the most puzzling case he's ever had) so I'm not particularly representative. But can certainly advocate for not hanging around and being as proactive as possible, as far as you can
Good luck! X