Hi Jaytee,
Must be hard to keep motivated if medication is giving you weight gain as a side effect. No option to change up to something different I assume? Well done you for going full steam ahead to battle it and keep going ... glad yu are now seeing results.
Local leisure centres usually have non membership classes you can attend if this suited you more. ALso maybe local bootcamp sessions .. try Facebook and Google to find them.
Welcome to Social Slimmers