Guysss I’m having my rainbow baby ❤️😭

We had been trying for 2 years with one miscarriage and was sent to fertility clinic’s and was told we was unable to have a child my heart is so happy right now😭 I’m only 4 weeks but just seeing the line get darker is a blessing ❤️ any tips on what is best to keep this baby healthy would be greatly appreciated ☺️