Hiya i am in a similar boat!
i started taking micronon on 14/12 and took 26,27,28th late so decided to stop on 28th. had a small bleed on 30th-31st which was browny red and very light. my OH and i have had unprotected sex since then frequently and i am started to think i may be pregnant! i would love to be pregnant but not sure whether i am. i have been very nauseous and been sick, loads of headaches, really itchy nipples, period cramping, backache, aching all over, lost appetite, majorly bloated and been sleeping all the time! i found out today i have a uti which is likely to be the cause of my bad back pain. i have done 3 HPT and all BFN. as i don't know when i will get my period i don't know where i am in my cycle! not sure if i've just got my hopes up of being pregnant hence why i have symptoms, and would it be too early for me to get those symptoms?? help lol