Ok, so I'm due to be married next year, and move country full time to start my new life. (I live with my fiance full time in Paris , but I'm English and have to visit now and then, but I plan to end my tenancy etc after marriage and be here full time) then eventually move to Tunisia (his country of origin and where his family live, my choice to live there but will take some time as he is well established here in his current role, good job and would be hard, and take time, to do the same in Tunisia, so this will be a few years away yet). So we have it all planned out.
However, we visited Tunisia a couple of weeks ago and things got a bit weird for me, cycle wise. So I'll lay out below the time line and symptoms as best I can:
My cycle is extremely regular, I can pin point everything in my cycle without tracking or timing anything. It's just so regular that I came to know my body very well. I'd say my cycle is about 29 days.
My last period, before our trip, was 19 June and my periods are very short (3 days or so). We had sex during the time leading up to the trip, which was on the 6th July. We also managed to sneak in a couple of shags whilst there, around the 12th and then the 15th. On the last few days there, I began to lose appetite, and had random throwing up, and felt nauseous. I could only seem to eat fresh almonds 
On the way home I threw up twice and felt extremely sick. My moods were very extreme too; in a way I never had before. Crying when I usually wouldn't, pure rage Etc.
So we get back, and the sickness and nausea seem to lift, then a few days later I was sick, then again a few days later sick again (out of nowhere) with nausea between those episodes. Moods still wierd, no other symptoms. The sickness and nausea were totally random; not something you'd expect from a tummy bug for example.
So now I have missed my period by a fair bit. Moods still up and down very emotional, nose like a blood hound, my cervix feels weird (not like it usually does at any time of my cycle) and the same for discharge. No sore boobs but my back is agony, lower back. Slight cramping on and off similar to pre period but less painful, and the pain now and then favours the right side. Slight dietary changes. Sleeping a lottttttttttt!
But.. no positive test? I did a digital first before missed period but way too early. Since then I have used the same tests over and over (pink dye two line ones) and always neg. One of them I thought I saw a line, but it was a squinter and a half and I couldn't even pick it up on pics, even using camera. To be fair I only used fmu once but that was a clear neg anyway. No idea what's going on! No blood at all.
Fiance is convinced of it, I am too but also I am obviously wary because of the tests! This would be my first. And as I said above, we have a plan and this would kind of put a spanner in the works. Although would be 100 percent accepted and happy too.
To note; I am not on contraception and we didn't use condoms. Pretty stupid way to divert our plan 
but hey ho, baby would be loved and welcome. Just would need to change said life plan. So I would be happy with a yes or a no. Also I'm pretty certain we had sex at the time I would have ovulated.
We plan to go to the doctor, but I'd just like some opinions please. Being a possible new mum and not knowing is scary for me. I never had a mum (She killed herself when I was 13) so I don't have mum around for this type of advice. I'd really appreciate "mum" advice please 
