I just dont understand

Cassi • Single Momma of Four Graci 5-7-15 Graeson 9-7-16 Gabriel 8-6-19 and Baby G due 6-25-22! Angel Momma.
Ive been ttc for 4 months took a preg test today it was neg been having light cramping all day and all my friends are getting pregnant. Someone told me itll happen when i stop trying but its soo hard i wanna make sure im healthy but im loosing hope