Hello , I am 25 old married guy. Last one month , whenever I went to have sex with my wife,,with regards to foreplay everything is ok but when we go nudes,,, my penis is not standing properly. It stood up for some moment and I pushed my penis into her vagina but only my penis tip went inside to her vagina and it went down.. I do blowjob oftenly but since last month I decided to quit it,,now from last 20 days I did nothing but now I m facing this problem,,plz help me