So confused.

Ugh I hate this waiting game. I have extremely sore nipples, weird vaginal discharge, I’m so tired and grumpy, I’ve been on and off sick and STILL no positive. I’m 19 DPO and 5 days late for my period but I keep taking tests and they all come out negative! Ttc for over two years now and I’m starting to give up. I didn’t show up with my first baby for 6 weeks but I would be close enough it should show right? Could I have ovulated later and be pregnant just not as far along as I thought?