Need some help...

I have been TTC for 4 months. Very faint positive on DST at 12DPO then today 1 day late on period (15DPO) I see a maybe there probably have like eyes on FRER. I’ve had extremely sore breast since 9DPO which is extremely rare for me the last time I felt this I was pregnant with my daughter, On and off cramps, super vivid dreams, and an extreme thirsty especially at night and fatigue like no other. I have one more FRER and am nervous to test and of course I know I should wait a few days but something tells me this isn’t my cycle.. anyone have an experience with this? Pictures below of DST and FRER.