How much?

Tori • 26. Benjamin born 4/17/19. IVF warrior.

So I am 24 and have been TTC for about 4 years now. the stress of negatives kept bringing me down and the pounds kept packing on. On 1/19, i weighed 296.6lbs. Today I weigh 276.5 thanks to weight watchers. My question is, how much do you need to lose before getting pregnant? I had my first normal, natural cycle in many many years (1 month between AF with no pills taken to induce bleeding) so I can see my body is starting to do the right thing but I’m wondering if there is some magic number that everyone hits and suddenly the baby happens lol. Pic for progress.