Hi Shan, a gf of mine used "maybe baby" when she was ttc & it seemed to work for her, she fell pg in her 2nd cycle of using it properly ~ she did say it took her a couple of cycles to work out how to read it properly so she started before they actually started ttc.

There are a couple of discussions on Maybe Baby HERE & HERE that may be of some help to you.

Hope you get some answers to help you out.