Phantom period while breastfeeding?

So my daughter is 7 1/2 months old and I exclusively breastfeed. I have yet to have a period but about 2 weeks ago I started getting headaches, extremely emotional, very bloated and little sharp pains in my uterus. One day I wiped and saw a very light spot of pink blood and thought oh great here comes my period. Well it never came and I don't have any of the other symptoms thankfully except feeling like a headache is about to come on all the time. Then this morning I had white discharge tinged with some pink blood but nothing else. I'm confused. Could it be nothing? Also i should add I know I'm not pregnant. We barely have sex and when we do he is very good at pulling out