Yay jbee
lovely to see you here! Cautious congratulations 
I'm on aspirin but I have three (unbelievable, I know) different blood conditions that all make my blood clot too much. Having read up on it, I wouldn't advise anyone to take aspirin unless they are advised to by a medic. When I was a child I used to take 'junior aspirin' if I was unwell. This isn't on the market anymore because aspirin was found to be linked to some quite nasty illnesses in children, involving brain and liver issues and may also have been linked to developmental issues. That makes me quite uncomfortable with taking aspirin in pregnancy, but I have to take it for the blood clotting and try to reassure myself that at such a low dose it will be fine. Who knows! You have to wonder whether the current fashion for self-prescribing aspirin in pregnancy is going to lead to a generation of children with seven toes or something... we'll see.
You could see if you can persuade your GP to run some blood tests. I asked for the antiphospholipid test as I had a hunch that it could be an issue and it came back positive leading to me now being consultant led and now I'm on heparin. So it could be worth pushing for some tests.
I would report yourself pregnant to your GP sooner rather than later to get the ball rolling with getting a booking in appointment booked etc. I did this but also phoned my midwife to let her know and to ask a couple of questions. She seemed fine with this even though I hadn't yet been referred through the official channels.
On the subject of weight gain - I must have gained at least half a stone! (I'm 11 weeks). I feel really fat and flabby and have been eating regularly to keep nausea at bay.
Moonlight - I have got fabulous RL support thank you
. Goodness knows I've needed it just to get this far and that's before a baby makes an appearance and makes me question why I ever thought it was a good idea to do this on my own! My parents are great but unfortunately live at the other end of the country but I have friends who rallied around after the miscarriage and who seem to be queueing up to be self-labelled aunties and uncles (I've had to put a stop to that otherwise my child will end up with twenty aunties and five uncles and will probably be rather confused by it!). I've actually been really touched by how supportive people have been, both of my doing this on my own, but also looking after me when things have gone wrong.