Take care that it is swollen and not an actual bulge, IIRC tendon itself can't swell but perhaps the sheath can. Tendinopathy is no fun, as I've found out. Only just found that with achilles problems you shouldn't have cleats to the front, now moved back to midway and monitoring for an improvement.
Achilles a lot better, but still swollen a week on. Hoping it will be resolved for lel.