Looking for a manga. It’s an omegaverse. The MC is like a dominant omega, and he has to go to a clinic every month during his heats because they’re super bad. He hasn’t found a mate because he’s not small and “feminine” like other omegas. I think the clinic is made up of betas that help omegas during their heats. If I’m not mistaken, the ML is a doctor running a clinical trial that the MC joins. Thanks!
I ended up finding it myself. Here you go: https://www.mangago.zone/read-manga/madna_alpha_aha_morumottoni_koi_wo_suru/
An anime adaptation will release in the fall.