Trying...help?

Me and my husband have been trying for a year to get pregnant we found out i had polycystic ovaries. All i have to do is take the medicine for for weeks and then it'll be easy for me. Well its been 3 1/2 and we've had sex a couple times. Do you think i could still get pregnant I've been feeling really nauseous fatigued nipples have been really itchy. Im lost i don't know what to do. We have a foour year old already. Can someone give mgs advice.