well in April, i had sex a few days before i ovulated. no protection. then about 8 days after i ovulated i started haviing a sharp pain on the right side of my lower adomen. i thought i might be pregnant, but then later in april i got my period. and it was heavy, so i doubt it was implantation bleeding. my period ended on may 5. ever since then, ive been having period like cramps.. it only lasts a few seconds and then goes away..but for the past hour i've been having the cramps non-stop. my lower back really aches..my stomach looks real bloated and bigger..yesterday morning i had heartburn..also i don't think it's a uti or kidney infection, my urine is clear and a light yellow..i get uti's a lot and my urine is usually dark and cloudy.....i'm just confused because i don't have the big symptoms like missed period, sore breast, nausea. so i just need opinions. 
thanks!
thanks!