Personally, I had some complications early on so I'd say be very careful. Before joining any gym, please consult your gynac first to see if your body is ready. Sometimes heavy lifting or intense workouts can cause issues when u are actively trying.
Actually, my tracking app had a whole section on this and it said moderate exercise is super helpful for fertility! But honestly, dont start any high-intensity gym routines suddenly if your body isn't used to it. Better to stick to light cardio or yoga and keep tracking your cycle.
I was trying for a year and honestly, light gymming helped me stay active and destress. Just make sure you are not over-exhausting yourself because stress can delay conception. Just keep it light and enjoy the process!
As a working mom who barely got time, I just did brisk walking for 30 mins instead of gymming. If u want to join a gym, let the trainer know u are trying to conceive so they don't give heavy workouts. It's all about balancing your stamina and work stress.
When I was trying, my doctor told me staying active is good but not to overdo it. I ended up having a C-section later, but building basic core strength early on really helps with recovery. Just tell your gym trainer clearly that u are trying, and keep it very gentle.