HELP! Is this normal?

According to the app, I’m now 14 days late and on Day 46 of my cycle. I used a ClearBlue ovulation kit that peaked on March 1, 2018 so I’m fairly sure I ovulated. My last three cycles AF showed up on Day 37, so historically speaking I’m only about 9 days late. I took two different home pregnancy tests this morning (ClearBlue Digital and a generic brand) both are NEGATIVE.

My temp is evaluated slightly. I’m having slight cramping on my right side. I feel like my breasts are getting bigger and so doesn’t my partner. Yesterday, I woke up with hot flashes. I’ve had crazy dreams the past two nights and really vivid dreams. And I’m the least stressed I’ve been in the past three months! What the heck is going on? I scheduled the first available appt. with my doctor for April 26th. Are false negatives a thing? I’m just so confused because the ovulation kit gave me a peak reading on March 1st! HELP!

FYI: I’m 34. I have been on birth control since I was 15. Took a break for about a year at 32 and have been off since September 2017. I’ve had a period each cycle since I stopped in September up until now. No children. No prior pregnancies.