Hi suzzus,
You're embarking on a massive journey that no doubt you've thought about over and over all your life.
I contacted my birth mother without telling my husband (waited until he'd gone out one night, then drank a bottle of wine to drudge up some dutch courage). If I'd told my husband, he would have stopped me and told me to be reasonable and more clam in my approach. I'd found two phone numbers and called both - only to get voicemail but the same voice on both. So drank a bit more and then called the home number again and o and behold, I said, 'urm, hello, I am looking for X' and she said 'you were born in Southampton weren't you?'
Now that was the good bit - we spoke and cried and spoke a bit more, both relieved to have fit a piece of the jigsaw into place.
HOWEVER....I was 22 and looking back on it now, it could have gone very differently. If I were to be in that position again, I would have asked my husband to write to her with some photos and then left it up to her to make contact. My reason behind this is because I did not know her situation, who she had told, whether she was okay, alive, etc.
So my advice, based on my experience years ago, is ask someone you know, or an intermediary to write to your birth mother.
Good luck and do get in touch if you'd like some more help or just a chat.
Regards,
H