do I give and keep trying or stay wishful?

At the moment me and my husband are TTC with our second baby and I am having ALL of the stereotypical symptoms, achy boobs, back ache, sickness, hair loss, mood swings, twinges, fatigue, insomnia etc I have had my implant bleed as well but it lasted for 5 days and was like a really light period and I know my body and can remember (partially) from last time that my IB lasted 7 days with my daughter and was like a heavy period. I know I'm pregnant but I'm still getting negative tests.. my IB finished 2-3 days ago and still nothing. online it says wait 2-5 days after and not to get discouraged .. but im trying to stay level about it, I'm not imagining it like my husband thinks but when do I give up and try again or do I stay hopeful? 🤔🤔🤔🤔 if anyone knows a lot about this sort of stuff and can help give some peace of mind please feel free to comment or message to ask more questions i am pretty desperate for help xx