Ttc. Excited.

Ok so I just bought preseed I hope it works for us. I can't wait to start. this is only the 2 month of trying. I know its not a long time of trying but we lost are 10 day old little girl about 8 months ago and it being hard on us. So we finally decide to start trying again. I just really excited about it and had to tell someone lol. But does anyone have any advice on how to use preseed or just follow the instruction?