Baby fever!

So my husband and I have been TTC for three months now. I know it doesn't seem like a long time but every month that my period comes the disappointment is bigger. I am hoping this month is our lucky month. We had intercourse the two days before ovulation and the day off. I am 5 days  post ovulation and I have had very mild cramping on and off and lower back pain on my left side that also comes and goes. I'm hoping that these are good signs and that it's not all just in my head, it's so hard to wait 2 weeks before my period comes!!!