Thank you all for the well wishes and support.
Saw midwife and she checked bub with the Doppler as I had the big scan earlier in the week. Baby is fine, she said there is nothing to worry about and these things happen sometimes and they don't know what causes the spotting. I'm so relieved everything is ok, but could have done without the scare!
Got lots of wriggles and kicks last night as an apology/ reassurance though, and dh was able to feel really some strong kicks; he felt a few last week but they were faint.
In answer to age question, I'm 28, will turn 29 2 months after baby is born. Hubby will have just turned 33 when baby arrives. Or as he keeps saying, it might come on his birthday.
Funny to think he was 23 when I met him and I thought he was so mature!