Hair???

Sara • FTM • DD Nov. 24 but born Nov.19 • Happily Taken❤️
So I'm 16weeks & 1day pregnant. My hair has been thinning out A LOT and has been falling as well. What could I do to strengthen my hair or do I have to wait till after pregnancy to go back to normal?? My hair is past my waist.. very long and I do not want to cut it. I get bad anxiety since I'm so used to my hair being long.