TTC / early signs

Brittany
I have been TTC for about 6 months now. 
I know that I need to be patient.. but I know I am not the only one out there that feels discouraged when Aunt flow pays a monthly visit. :(
I am having lower back cramps, abdominal cramps and I have A LOT of vaginal discharge. My period just ended 3/16. Baby making happened on 3/18...
I haven't taken any tests yet because I feel like it's WAAAYYY to early.
Is this possibly early signs of pregnancy?