Nervous..scared....need to vent

Ok so I have been ttc #2 for 6 months now. Well I think I have succeeded. I think I ovulated 1/12. Well according to Glow that was my ovulation date. My cycle should start on the 26th. Anyways, I have very tender nipples, which isn't a period symptom for me and I am very moody and tired. I'm scared to test because I don't want to be disappointed. So for the past 2 weeks I have had this headache that will not go away. I can take medicine but it seems to come back. Also I have a cat and I am worried about toxoplasmosis since I am the only one who changes his litter box. Has anyone had this before or knows anything about it? Also how many dpo has anyone received a positive?