TTC #2

Hi All, Please can I have some help! I was due my period on Friday just gone but still nothing. I have all the symptoms that point to being pregnant especially today with extreme nausea 🤢 but all the tests (easy@home) have been negative, not even a faint. I am usually always bang on with my period. I did have a chemical pregnancy end of July/beginning of August but had a bleed after that as normal. I didn’t really do any OPKs last month as we were on holiday so can only guess when I ovulated. Can anyone give any suggestions or has any experience of this. Thank you