Is it finally happening to me! pregnancy?

ok so ive been pregnant before. it happend last year. i found out in nov. and miscarried in oct. i was devestated. ive been trying to get pregnant agian with my husband since then. i started my period on the 16th of jan and ended on the 22. me and my husband were still having sex while i was on my period. i stopped bleeding a couple days before i actually stopped for permanent. then started back up. as if i was spotting. then i completely stopped. we have been having sex this whole time plenty of times. however, i have been extrememly nauseated for the past 2 weeks. havent been eating much at all. all i want to do is sleep. ive been having a sharp pain in my left side of my lower abdomen, my uterus area feels a little swollen even when my bladder is completely empty, im having back pains and just began to get constipated these past couple of days. however, my breasts are not really sore which i know can be a big sign but then again when i was pregnant the first time they werent sore than either. ever since the day i got off my period also i have been having a milky white discharge and just a couple of days ago stopped and i have never had discharge that long. im extremely confused and eager to find out if i am. however when i was pregnant before i just had the sharp pains in my lower left side of my abdomen and got extremely nauseated everytime i smoked a cigarette. i really need some advice. cause if im not pregnant what could possibly be wrong with me right now??? thank you so much. id appreciate some advice. :-)