Needto- might be better for you to start a new thread title for your question because you've posted under' how long does HRT take to work' which doesn't seem to be what you want to know?
HRT doesn't maintain your periods / fertility. We have a finite number of eggs and when they are gone, they're gone. So without or with HRT your periods would have stopped at the same time. Bleeds on HRT are withdrawal bleeds - bit like bleeds when taking the Pill (sorry if you know this!)
I'm assuming you say you were 'allowed' conti HRT because you are 53, but the 'rules' are age 54 or without a period (natural one) for 12 months.
If you were having natural periods when you began HRT it would have re-set your cycle - sequential HRT- so it'd be hard to know if your own cycle was overriding the HRT which it can do in peri, or if you were having a regular monthly withdrawal bleed. Probably the latter .
If you are still getting PMS symptoms then that suggests you have cycles still from your own hormones as on conti HRT where you take 2 hormones every day, you ought not to have cyclic symptoms, at all.
You ought not to have any bleeding with conti HRT- that's the whole point, that it's bleed-free.
If you have been bleeding then it seems as if you are not ready for conti and ought to go back on sequential. It's quite normal to get some breakthrough bleeding on conti for a few months but this would only normally happen if it wasn't controlling your own hormones due to you still having enough oestrogen.
I'd say you are not ready for conti yet, but maybe carry on for 2 more cycles and see what happens.