Faint on boots brand and vvvvf on frer

Nat • Grave’s Disease Warrior 🦋

Morning glow ladies. So I’m not sure if I’m 10dpo or 13dpo as I’ve not tracked this month as we have our fertility specialist tomorrow. We tested this morning as I’ve been feeling very nauseous (could be nerves) and we got a stronger faint line on the boots 5 days early and a serious squinter on the FRER. Has anyone had this experience? Both tests were read within 5 minutes. I’ve heard first response have been giving some false negatives lately or the lines have been very faint