22 month old suddenly waking at night

[LUCIA22]

My DD is 22 months and has gone from sleeping right through from 7am to 6am to waking most nights and needing me to sit with her before she would go back to sleep. It started one night a week and has increased to nearly every night. She doesnt cry at first just calls for me unless I ignore her and then she becomes distraught. I go in, give her a hug and then get her to lie down and she is happy to go back to sleep as long as she knows I am still there, I have to creep out once she has gone to sleep. This takes anything from 20 mins to an hour. Is this just a phase or a sign of something. I am due to have second baby in 2 weeks and could do with having this sorted before then. Do you think it is anything to do with the new baby coming? She has also started making a fuss at bedtime sometimes too.
Someone recommended using Medised for a few nights to help her sleep through and break the habit but you couldnt buy any today as was told no longer allowed to give to under 6yrs.

I had exactly this experience with my daughter when I was pregnant with number two. Funnily enough, it was while settling her that I realised that I was in quite strong labour. I personally think they intuitively pick up change and, like all these things, that it's just a stage. Someone else may have a different view.

I thought it might be something to do with the new baby coming. She has got more clingy recently. The waking is happening pretty much every night now and we are having to do the same thing at bedtime to get her to sleep. Luckily she has gone from only wanting me to sometimes asking for Daddy instead which I am pleased about (although he is not wild about it at 2am!!!) as once the new baby comes I wont always be able to go to her. I would be grateful for anyone else who has had this and how did you cope with it and how long did it last. Will she settle again once the baby is born?