Hi Debsi. It's good that you are speaking to your GP about this as we should never put new symptoms down to menopause.
Night sweats and weight loss with irritability and low mood can be a sign of thyroid problems - overactive rather than underactive - and a blood test will show this up. You can also experience night sweats if you have a low-grade infection which shows no other symptom.
Some women take quite a while to react to love levels of oestrogen so you may "just" be experiencing the first stages of menopause and once anything else is ruled out then HRT is something you may wish to consider.
There is lots of information on here plus friendship, humour and always someone to just listen to you and give an encouraging word or suggestion.
Taz x