Thanks for the query.
At the time of ovulation some amount of spotting can be seen because of hormonal
As you are having spotting for prolonged periods
there could be some hormonal imbalance.
Increased endometrial thickness is also suggesting that.
So you once get evaluated for hormonal profile.
Depending on that treatment can be taken.
Once periods become regular you may not have any problem in conceiving.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429