Hopefulmummy,
Dun worry so much. If your hcg level is high enough, it shouldn't be chemical pregnancy. Just wait for the scan on wk 5/6 to see the sac and then wk 7-8 for the heartbeat.
The pregnancy journey is long and it can be a roller coaster ride so dun worry too much now and enjoy the moment.
For the take baby fair, some of the items are quite cheap. i bought the tiny love musical mobile, munchkin organizer, and some small items like cotton balls, combi cutlery set. Their avent bottles are cheap too. Only thing is the huggies diaper which I find no price diff from supermarkets. There is also a medela, pigeon booth and strollers, cots.
As for clothings, more suitable for gals as the boys selection is rather boring.