confused!!! help

im 23, iv had 2 miscarages one at 17 weeks (a little girl) and one at 16 weeks (also a girl) so pregnancy is something im a little scared of. anyways i thought i was a day late so i checked my calendar turned out i was 1dpo and actually had sex the day before and 3 days before i apparently ovulated (i dont test) anyways both my pregnancies where different one i got symptoms very very eary the other i had none at all the whole way threw, so i woke up this morning meant to be 3dpo and im so run down tired sore throat i put it down to maybe im ill ( throat infection) but as the day went on my boobs started to ache and i would curl over in pain from a pinch in my womb area the pain down there has stopped but its just tingling now but boobs and sore every now and again any advice.