I've been having brown blood I assume for about 3 days now, this is baby #5 for me and this has never happened before. For some reason I feel like it could be twins. My stomach feels huge to be so early, My head hurts on and off and I have slight cramping but only on one side for a few minutes then won't come back until the next day or 2.I also been having slight sharp pains in my lower back. I don't go to the midwife until the 22nd. What do you guys think?