35m, married since 2 yr, earlier i used to last 3 to 4 minutes. but now i ejaculate after 2,3pushes. wife is pregnant n we do sex once a month. help?

Slow it down: Start with 5-10 minutes of foreplay ( touching, stroking, oral, etc.) and stop as soon as you feel yourself cumming. You can use your PC muscles or have your wife use the "pinch technique" - a firm hard squeeze of the tip of your erect penis, enough to make it disappear, then start all over. I suggest no intercourse for 7-10 days, Practice your Kegel maneuvers and squeeze technique. Google Kegel