Low estrogen?

Hi all! I have a TMI question. My daughter has now been breastfeeding for a year!! We did it!! Around 9 months i started to notice how sensitive my vaginal area was becoming. I get irritated quicker. Is it possible that the skin is thinning from low estrogen? Has anyone else experienced this while breastfeeding for an extending amount of time? If so was there anything that can be done? I know i should talk to my doctor but i figured i would start here and see if I’m not the only one. Irritation really only happens when my husband and i get intimate. 🤷🏼‍♀️. I’m not allergic to anything and we don’t use anything.