when is the right time to take the pregnancy test?

So! Today (11th) is my periods date, as per my normal cycle i should have had my periods by 6-7th may, this is late for me. We have been trying for a baby since 2-3 months but last month was the first time we tried following the 'doing it during the most fertile time' thing. Now i am super excited and nervous at the same time. I have all the symptoms of early pregnancy like cramps, nausea, mood swings, fatigue.. but all these symptoms are so similar to PMS symptoms! And i already took a test last month and was very disappointed to find a negative result. I don't know how to control this restlessness and for how long to wait till i go for a home pregnancy test. I so so know i might be pregnant but i just can't stop my hopes from reaching cloud 9 😐❤