Pregnant? or Not

I had my period on the 10th April, my partner and I had intercourse on the 16th April again on the 21st and then the 28th, it has now been 42 days since my period and I have still not come on, although I never keep track of my periods I am sure it has never been this far apart and also a week or 2 before I am due on my breast normally become very tender but I do not have that yet but they do seem bigger I have also put on weight around my belly, hips and thighs slightly and have been a bit moody & emotional I have also been going to the toilet a lot in the last 2 weeks but that does seem to have clamed down now. Could there be a possibility I am pregnant or do you think I am getting my period????????