Hi, my name is Siobhan am 25yrs old and i been with my partner for only 4 months now, ive been taking the pill called Femodene and i think i could be pregnant , i keep getting a pain in one side of my lower tummy and my breast have got bigger and tender and a little sour, but im not feeling sick or anything. i had my last period on the 15th July and i stopped on the 18th July. Is it still possable to be pregnant while on a period? ive put weight on in the last 2 months also. so is it possable i could be pregnant? i havent done a test yet.