Could i be pregnant?

i have been trying to get pregnant for over 6mths now my last period was on the 26th april.I have worked out that i have a 30day cycle and we had on the sat 10th and sun 11th of may. On the wednesday 14th i had lower pains followed by having watery clear discharge and feeling very wet. on saturday the 24 just before my period is due I have also been having sharp pains on and off on one side mainly. i have been going to the toliet more often even though not drinking much to. Apart from that i have like a constant ach on and off and feel like twitching or throbbing movement down low. did a pregnacey test this afternoon and it was neg. i can also my body tem rise with a hot flush now and agin to. So could i be pregnant or is period coming. what do you think about my syptoms.