Thank you so much for your responses ladies.
Saw my GP this morning. No awkward questions really - DH and I have one DD so I guess he assumed we know the basics!
In case anyone reads this who is in a similar situation, he asked:
Whether my DD was with my current DH
Any changes in my cycle since I had DD (he asked quite a lot about this and made notes, and checked when my last smear test was/results on my medical record)
Any changes in lifestyle/stress levels
How long we had been trying
He was very matter of fact so it wasn’t at all embarrassing. When talking about my cycles I said I did use OPKs and had been temperature charting for the last 6 months. He was a little dismissive of these, not in an unkind way, but he thought they aren’t reliable indicators for anyone who has any fertility issues and that they cause stress.
He’s got me booked for blood tests next week (day 21) and he’s ordered quite a lot of things checked - progesterone, LH, FSH, testosterone and some ones to check for diabetes and thyroid function. He’s also referred me to have a trans-vaginal scan to check for endometriosis or other issues with uterus lining, but he said there might be more of a wait for that and that I should get a letter from them within a few days.
He said if those all come back with no issues then there are a few more tests that can be run and that my DH should have sperm analysis, but that as we already had one child there wasn’t any reason to assume more serious issues or any issues with DH so we should wait for initial results first.
Basically, I’m quite pleased with how it went. I felt like I was taken seriously and that although he said he wasn’t concerned and it was within normal timescales, potential problems are being checked.