you need to get in touch with your midwife tomorrow and explain the situation.
If you HAVE had chickenpox, then you should be ok, but you should have a blood test to ensure immunity.
Chickenpox as you give birth, and in the newborn can be very dangerous, but only if you don;t have antibodies. If you do, then you and baby should be protected.
also, I would think the unit needs to know.
I am not a health professional, but my DD2 came down with chicken pox when I was 38wks pregnant with DD3.
I knew however that I had never had it as a child, and blood tests confirmed this, but I had the blood tests done within 5hrs of DD2 being confirmed with CP (she was in hospital when she cane down with it......she had tonsilitis, bronchiolitis and chicken pox all at the same time, she was really poorly with it).
anyway, within 4hrs of the blood being confirmed that I was not immune, I was being injected with the vaccine.
plus, I was also told that I was not allowed to give birth where I was booked in (a midwife led unit), but was now classed as high risk and had to go to the consultant led hospital with NICU (in case of problems). I was also to be isolated once I had given birth, to protect the other mothers.
The risks are high of probs, but I repeat, only if you have no immunity. I had a friend pregnant and due at the same time as me, her DS also came down with CP, her bloods showed immunity, she was allowed to give birth in the midwife led unit and no jabs needed etc.
as for me and DD3, even with the jabs, she was born with it, I developed it. Bizarrely neither of us have immunity still, even tho we have both been vaccinated again, and every time it goes around, DD3 gets ill.
DD3 has also been left with an immune deficiancy, which altho not proven to be, I feel is connected. Her consultant however has reassured me that had we not had the jabs while I was pregnant, then the story would have been very very different.
I am not wanting to scare you, and the likelyhood of you being fine, seeing as you say you have had it, are very very high, but please please check. As long as they know before labour, then everyone will be calmer and happier IMVHO.
take care tho, whatever happens.......poorly little ones when heavily pregnant is horrid.