Hi Jade,
You may want to take a look at Bach flower Remedies.
These are made from flower essences – 1 for each state of human mind or emotion.
There are different flower remedies for different problems (eg; Mimulus remedy is used for fear of public speaking, etc)
I used to take some of these remedies for my problems and found some relief.
The Bach remedy you may be looking for is “Red Chestnut“.
By doing a web search I found that it is written on the ‘Red Chestnut’ bottle as – “allows you to love without anxiety or fear for the well-being of your loved ones”
Below are some descriptive links on which of the cases one should use this remedy-
1. http://www.bachcentre.com/centre/38/redchest.htm
2. http://mudraguide.com/bach-flower-remedies-red-chestnut-and-letting-go.html
3. http://www.bachflower.org/red_chestnut.htm
Not 100 % of what is written above may be applicable to you because it is written for a generalized population.
Do some research and if you are interested and not able to find it then let me know and I will let you know where it is available.
Regards,
VJ