OP, no judgment from me. Unfortunately the AIBU boards are not the best place for these sort of posts – as a pp said, posting in Relationships would get a better response.
The way I read it is you came out of a long (2 yr) relationship and while single, you had a drunken unprotected ONS on holiday. Doing the responsible thing you took the MAP. Shortly after this you got back together with your bf and then after that found you were pregnant. Haven’t a clue on working out timings but from what your Dr (as well as others on here) says, it seems your bf might most likely be the dad – of course DNA testing will help confirm this.
There’s a bit of misinformation from other posters on here re HIV testing. Re the HIV test you took at the GUM clinic – if you gave a blood sample from your arm this would be a 4th generation test analysed in a laboratory. It would, as well as detecting HIV antibodies, also detect the P24 antigen (part of the virus itself) that shows up in blood sooner than the antibodies – from about 2 weeks post exposure. Tests generally detect 95% of all HIV infections at 28 days and are conclusive at 3 months. These tests take about 1 week to get the results back.
It doesn’t not take any longer than 3 months for HIV infection to show up in any modern tests.
i-base.info/guides/testing/what-is-the-window-period
It’s great you have been totally honest with your bf and with your Dr, and you also got yourselves tested (being responsible again!) Perhaps also consider that if your bf had any unprotected sex while you were both single that he get conclusively tested for any STIs post any last exposure, taking into account window periods. Just to be on the safe side – he should explain he has a pregnant fiancée!
For yourself – you ask if STI testing is done while pregnant. Despite what other posters have written (and perhaps they don’t live in the UK) yes – you should be offered these tests – HIV, hepatitis B and syphilis. I strongly suggest you consent to these in August as this should take care of any window periods for HIV and syphilis
www.nhs.uk/conditions/pregnancy-and-baby/antenatal-care-checks-tests/
…..These tests are not however compulsory (I wish they were, considering there’s about 8,000 people living unknowingly with HIV in the UK). Suffice to say, if a woman has unprotected sex with a man who has not been tested for STIS and has had other past sexual partners, there is always a risk, whoever they are.
Whether the pregnancy was intentional or not, and the fact you fell pregnant so fast, you and your bf have decided to make a go of things. You have a house together, you are now engaged and are happy. Your bf has taken another job with better pay and you are working more hours. You also have a loving family who will support you. It sounds like, other than the “blip”, you are off to an excellent start and as with any relationship, it’s up to the two of you to make it work. Wishing you all the best OP.
Oh - and don’t diss the ginger nuts/ginger ale, they can be very helpful 