Two pregnancy tests came out negative, but I still don't have a period. Should I go to the gynecologist?

Hello, After 25 days of intercourse I did a pregnancy test (in the evening), which came out negative. According to the manufacturer's recommendations, a week later I did another test (this time in the morning), which also came out negative. And unfortunately, the period is still not there (I have them quite irregular). Should I go to the gynecologist as soon as possible? Thank you in advance for your reply