I think Jay went to hospital on the Saturday a few weeks ago when the Sunday HL consisted of basically a 'Previously' re-cap. The BB producers knew they couldn't show too much of what happened that day as Jay was becoming one of the main HMs
I think one of the times Heaven went to the dentist was on the Tuesday of the week leading up to her eviction (against Aden and Aaron) as she was barely on the HL show on that Wednesday and I found it odd as they usually heavily show HMs during the nomination week