So i came off the pill only was on it for a month, decided we want d another baby, so we've been trying I had sex the 15th of this month and then again on the 20th and again last night I've got a dull ache in my lower tummy and dull ache in my back, any idea what this could be I am hoping maybe implantation from the 15th maybe? I don't know I'm just curious.. what could this be!! It's not my period as I aren't due for another 2 weeks thanks!