I am sorry to hear of your loss Riki. I am sure you have heard all the it was no the right time etc , etc. But it is a common thing , even though very sad. One of the main things you need to do is keep a positive mind and not dwell on the loss and worry that it may happen again. Easy said I know.
I have put in a few crystals that may be of help to you.
Moonstone - great for fertility.
Agate ( the banded) - a grounding stone. Improves perception and analytical qualities. Balances yin and yang, harmonizes physical, emotional, mental and etheric qualities. Soothing and calming. Raises consciousness and builds self - confidence. Stabilizes the arua, eliminates negativity. Overcomes bitterness of the heart and inner anger. Fosters love, truthfulness and courage.
Rose quartz - helps heal the heart. Calms and reassures and brings that deep inner healing. Releases blockages from unexpressed emotions, opens heart chakra, soothes wounded heart and internalized pain. Aids self - forgivness and acceptance. Said to increase fertility.
Bloodstone - a good cleanser of the body and energy. Benefits all blood rich organs, regulates blood flow. Cleanses lower chakras, realigning energies. A stone of courage.
Unakite - Treats reproductive system , aids in healthy pregnancy.
I felt the moodstone mainly for fertility and is a soothing female stone; the agate to help with the loss and gain self love again; rose quartz for fertility and soothing to the heart and so you release any self blame; bloodstone for the courage to know that all is well; unakite for the aid of healthy pregnancy.
I hope this helps. But all things in their own time, learn from the loss the lessons that are there for you and your relationship. Know that all will be well and move forward. Positive affirmations as well all help.
Blessings to you, I will light a candle that all goes well from now on for you and yours.
Kath