I started to have cramps after sex and also felt bloated. Am I pregnant?

Hello doctor,

I am trying to have baby. Actually, we started trying just last month. I think we timed it well during and before ovulation. I started feeling to have cramps after having sex. I never feel cramps at the time of ovulation. So, it was unusual. It used to increase when I stand for long. It was normal and not really uncomfortable. It was there for four days. Can it be cramps after conception? I felt tired for two days. My pelvic area also felt heavy. But, now I do not have any cramps. I think I feel bloated. I read online that all these could be early pregnancy signs. I thought it would take more time to get pregnant. Am I pregnant? I feel no more signs. Now I am in a week after my ovulation and a week before my expected periods. So, I cannot do pregnancy test. I am going crazy thinking that I might be misreading the signs. I am a pessimist, so do not want my hopes up. My age is 28 at present. Please guide.