Help ladies

So I am now 23 days late on my period. I went to the doctors I want to say a week and a half ago or two weeks ago for a pregnancy test came out negative but I do have UTI not sure if that can intervene in the results or if it may be possible that it doesn't show. Also me and my partner had sex 6/7 times (different days) unprotected and he ejaculated inside. I'm really worried I had a miscarriage two years ago haven't tried to get pregnant but the thought of being pregnant is exciting but really scary for me. The fact that it was negative definitely surprised me now I'm not sure if I'm freaking out or if I may just not be able to conceive after my miscarriage. I am very regular didn't have a period December and waiting to see if I get one this month just want some stories or tips thanks ladies❤️