Perhaps trying different exercises might lead to finding something that does not cause increased symptoms? Yoga (milder forms), swimming, pilates, stretching, a recumbent exercise bike? Maybe starting with very gentle types of movement could help, with no impact involved. Many gyms have recumbent cardio machines that are very gentle and are even milder than recumbent bikes (sorry I can't recall the brand name of those at the moment). Even strength training with 1 or 2 pound weights, or light bands, could be a place to start. If you can get back into something milder, it might lead to improvements over time so you might be able to progress to more of the things you used to enjoy. Another option for now could be focusing on upper body movements only. For example there are cardio machines that are like "bikes" but only use the upper body. Or strength training, still light, with upper body only.