Having symptoms but not pregnant 😕

I was jut wondering if I could have some help or advice please.

I'm having a few pregnant symptoms (sickness/constant tiredness/ nausea/ And lost interest in some foods). But when I do a test im not pregnant is it because I'm doing it to early? Or ...... Me and my partner having been tying for 7 months now I was on the pill for about 8years before we agreed to start trying. But soon as I stopped my period went back to regular straight away. Just wondering what you would do in this situation.

Thank you