Are my breastfeeding days over?

Ma

So little girl is 5 months now and has been doing well until two weeks ago we discovered our girl was not getting enough breastmilk anymore and we had to start giving formula as an extra. Meanwhile I’ve been trying to up my production but it has not progressed allot and I’ve actually just got my first period today since she was born and I’m so scared does this mean this the end of my breastfeeding abilities and it’s only downhill from here?