Pregnant or not?

Hi everyone,

I was supposed to get my period on Monday, Feb 17th, but when I hadn't started by evening, I took a pregnancy test. This was because I'd had some noticeable symptoms the week before (a gurgling tummy, breasts feeling a bit bigger, mood swings, and I no longer enjoy my morning cracker with peanut butter). Anyway, the test was negative. On Tuesday I felt like my period was about to start. I usually feel that too, but then it starts right away. This time, though, I didn't start until Wednesday morning. I felt pretty rough that day with a massive headache, which I never normally get.

Yesterday afternoon I got a weird feeling in my lower belly, like contractions were happening, kind of like little electric shocks, but it didn't hurt. My tummy was also very hard and bloated. This morning, the gurgling in my belly hasn't stopped and my period is very light (it was 'normal' for the past 2 days). I did some searching online and read enough stories from women who bled normally in the first months and turned out to be pregnant later. So this is still on my mind.

Has anyone experienced this?