The most likely cause for your sub fertility
is the adhesions, this might be making the tubal function less effective and delaying conception. since you have been trying for 2 years without success, you need to get a full evaluation of your partner and yourself to know the cause. Sperm analysis, ovarian reserve
( check AMH), HSG
for tubal function is necessary , if all turn out normal then you may have to consider IVF.
Hope this helps.