Ttc and ovulation

Olivia

So we are ready for baby number 2. My first will be 2 next month. I've had a IUD since I had my son and got it out yesterday. I never had a single period the whole time I had my IUD and never tracked ovulation or anything like that since I wasn't trying to get pregnant. My bf and I went ahead and had sex last night(OB said I could get pregnant right away if I was ovulating). I forgot to ask how exactly do I know when I'm ovulating when I haven't had a period in 2 years. I know I could wait for my period to come back, but my dr said it could take a little for my cycle to go back to normal. Plus, we are wanting to start right away. Do we just keep trying and hope I'm ovulating on one of the days? I'm so confused. I know what discharge looks like when ovulating, but is that the only way I can tell?